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Subject: Urolithin A: The Most Underrated Compound in Longevity
From: Derek from Research Radar <derekpruski@substack.com>
To: tjphuhs@gmail.com
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Date: Sat, 2 May 2026 15:16:56 +0000
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Sender: Derek from Research Radar <derekpruski@substack.com>
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View this post on the web at https://derekpruski.substack.com/p/urolithin-a=
-the-most-underrated-compound

Research and educational purposes only. Nothing in this piece is medical ad=
vice. If you=E2=80=99re considering anything personally, that=E2=80=99s a c=
onversation for a qualified clinician.
I want to talk about something that isn=E2=80=99t a peptide but probably de=
serves a permanent spot in the longevity conversation alongside them: Uroli=
thin A.
If you=E2=80=99ve been around the research community long enough, you=E2=80=
=99ve heard of NAD+, rapamycin, metformin, GLP-1s, GHK-Cu, MOTS-c, SS-31. A=
ll of them have legitimate mechanisms. Urolithin A =E2=80=94 UA from here o=
n =E2=80=94 quietly checks more boxes than almost anything I=E2=80=99ve com=
e across, and I rarely see it discussed at the depth it deserves.
This piece walks through what it is, how it works, the mechanisms relevant =
to aging and neurodegeneration, what the human data actually shows, and how=
 researchers are thinking about it. Beginner-friendly, but with enough dept=
h to be genuinely useful.
What Urolithin A Actually Is
UA is a postbiotic =E2=80=94 a compound your gut bacteria produce when they=
 metabolize certain dietary precursors called ellagitannins and ellagic aci=
d. Those precursors are found in pomegranates (the highest source), walnuts=
, strawberries, raspberries, blackberries, and almonds.
Sounds simple. Eat the foods, get the compound. Here=E2=80=99s the catch:
Roughly 60% of people lack the specific gut bacteria needed to convert ella=
gitannins into UA. Even among the ~40% who can produce it, the amounts vary=
 wildly based on microbiome composition, diet, age, and antibiotic history.
This is why direct UA supplementation became a research area to begin with.=
 It bypasses the microbiome lottery.
UA was first identified as a mitophagy inducer in a 2016 Nature Medicine pa=
per from researchers at Amazentis and EPFL, where it extended lifespan in C=
=2E elegans and improved muscle functio=
n in rodents. Since then the research=20=
has exploded.
The Master Mechanism: Mitophagy
To understand why UA matters, you have to understand mitophagy.
Mitochondria are the energy producers inside every cell. They make ATP, reg=
ulate cell death, handle calcium, and produce reactive oxygen species. They=
=E2=80=99re also one of the first things to break down with age.
Here=E2=80=99s the problem: as you age, your cells stop efficiently clearin=
g out damaged mitochondria. Dysfunctional mitochondria pile up, leak oxidat=
ive stress, fail to make energy efficiently, and contribute to nearly every=
 =E2=80=9Challmark of aging=E2=80=9D you can name.
Mitophagy is the cellular cleanup process that selectively removes damaged =
mitochondria so new, healthy ones can take their place. It=E2=80=99s one of=
 the most important quality-control systems in the body.
UA is one of the only known compounds that directly and reliably induces mi=
tophagy in humans at oral doses. That alone would be remarkable. But the do=
wnstream effects of restoring mitophagy ripple through nearly every aging-r=
elated system.
Mechanisms Relevant to Aging
Let=E2=80=99s break down what researchers have actually documented.
Mitochondrial quality control. UA activates the PINK1/Parkin pathway =E2=80=
=94 the primary signaling cascade that tags damaged mitochondria for remova=
l. In human muscle biopsies from clinical trials, UA supplementation increa=
sed expression of mitophagy genes including PINK1, Parkin, ATG7, and LC3B. =
This isn=E2=80=99t theoretical. It=E2=80=99s been measured in human tissue.
Mitochondrial biogenesis. After clearing damaged mitochondria, you need new=
 ones. UA upregulates pathways involved in making fresh mitochondria, inclu=
ding AMPK signaling and Nrf2 activation. Research published in 2025 also id=
entified the SKN-1/Nrf2 and CAMK2D pathways as essential for UA=E2=80=99s l=
ifespan-extending effects.
Calcium signaling and inter-organellar communication. Newer 2025 research f=
rom the Palikaras lab showed UA modulates calcium signaling between the ER,=
 mitochondria, and lysosomes =E2=80=94 restoring =E2=80=9Ccrosstalk=E2=80=
=9D between these organelles that breaks down with age. Calcium chelation c=
ompletely abolished UA=E2=80=99s benefits, which tells us calcium signaling=
 is central to how it works.
Reduced cellular senescence. Senescent cells =E2=80=94 the so-called =E2=80=
=9Czombie cells=E2=80=9D =E2=80=94 are dysfunctional cells that don=E2=80=
=99t die when they should and pump out inflammatory signals. UA mitigates s=
tress-induced senescence in mammalian cells in a calcium-dependent manner.
Anti-inflammatory effects. UA reduces systemic inflammation. Human trials h=
ave shown reductions in C-reactive protein (CRP) =E2=80=94 a major inflamma=
tion biomarker. It modulates NF-=CE=BAB signaling and reduces pro-inflammat=
ory cytokines.
Improved mitochondrial efficiency. Plasma acylcarnitines =E2=80=94 markers =
of inefficient fatty acid oxidation =E2=80=94 decrease with UA supplementat=
ion in humans, indicating mitochondria are processing fuel more efficiently=
=2E
AhR/Nrf2 antioxidant activation. UA activates the aryl hydrocarbon receptor=
 and Nrf2 pathways, which collectively drive expression of antioxidant defe=
nse genes and reduce oxidative stress.
Mechanisms Relevant to Neurodegeneration
This is the section that doesn=E2=80=99t get enough attention. UA crosses t=
he blood-brain barrier, and the preclinical neuroprotective data is genuine=
ly impressive across multiple disease models.
Alzheimer=E2=80=99s disease (preclinical)
In multiple AD mouse models =E2=80=94 APP/PS1, 3xTgAD, and DNA-repair-defic=
ient ADP mice =E2=80=94 UA treatment has been shown to:
Reduce amyloid-beta plaque accumulation
Decrease tau hyperphosphorylation
Improve cognition on standard memory tests
Restore mitophagy and lysosomal function in neurons
Inhibit DYRK1A, a kinase implicated in tau pathology and Down syndrome=E2=
=80=93associated AD
Reduce neuroinflammation
The proposed mechanism: AD brains accumulate damaged mitochondria and fail =
to clear them. UA restores that cleanup, and the downstream effect appears =
to be protection of neurons from amyloid and tau toxicity.
Parkinson=E2=80=99s disease (preclinical)
In MPTP-induced PD models and A53T =CE=B1-synuclein transgenic mice, UA has=
 demonstrated:
Protection of dopaminergic neurons from MPTP-induced damage
Reduction of motor deficits
Reversal of cognitive impairment, a major non-motor PD symptom
Decreased hippocampal neuroinflammation
Reduced dendritic spine loss and synaptic damage
Activation of the AKT/CREB/BDNF signaling pathway, critical for neuroplasti=
city and synaptic health
The PD research is particularly interesting because dopaminergic neurons ar=
e extraordinarily mitochondria-dependent, and mitochondrial dysfunction is =
widely implicated as a driver of PD pathology.
Stroke and multiple sclerosis
Preclinical models of ischemic stroke and MS have shown neuroprotective eff=
ects of UA, primarily through anti-inflammatory and mitochondrial protectio=
n mechanisms.
The important caveat
Almost all neurodegeneration data is preclinical =E2=80=94 cell and animal =
models. Human clinical trials in AD or PD specifically haven=E2=80=99t been=
 completed yet. The Alzheimer=E2=80=99s Drug Discovery Foundation has noted=
 that for neurodegeneration, UA may need to be started early =E2=80=94 well=
 before clinical disease onset =E2=80=94 to provide meaningful protection.
This is consistent with a broader theme that runs through the whole longevi=
ty field:
Mitophagy interventions probably work better as long-term resilience tools =
than as late-stage rescue therapies.
What the Human Data Actually Shows
This is where UA separates itself from a lot of =E2=80=9Cpromising=E2=80=9D=
 compounds. We have actual placebo-controlled human trials.
Phase 1 safety trial (Ryu et al., 2019). Tested in healthy elderly adults a=
t 250=E2=80=932000 mg single doses and 250/500/1000 mg/day for 28 days. Fav=
orable safety profile at all doses. Bioavailable in plasma at all doses. Mo=
dulated mitochondrial gene expression in muscle biopsies at 500 and 1000 mg=
=2E
Phase 2 in middle-aged adults (Singh et al., 2022, Cell Reports Medicine =
=E2=80=94 the ATLAS trial). 88 sedentary middle-aged adults, 4 months of su=
pplementation, 500 mg or 1000 mg daily. Results: roughly 12% improvement in=
 leg muscle strength, clinically meaningful improvements in VO2 peak and 6-=
minute walk test at 1000 mg, reduced plasma acylcarnitines (better mitochon=
drial fuel efficiency), reduced CRP (lower inflammation), and increased mit=
ophagy and mitochondrial proteins in muscle biopsies.
2025 cardiovascular trial (iScience). UA improved cardiovascular biomarkers=
 in humans. Preclinical models showed reversal of systolic and diastolic dy=
sfunction in aging hearts and heart failure models.
2025 immune function trial (Nature Aging). 50 healthy adults, 1000 mg/day f=
or 4 weeks. Improved markers of immune fitness.
Dosing patterns from the literature
500 mg/day shows benefit but consistently less than 1000 mg. 1000 mg/day is=
 the dose used in most positive trials and appears to be the evidence-suppo=
rted dose. Timing: morning, with or without food =E2=80=94 absorption isn=
=E2=80=99t significantly affected by food. Time to effect: gene expression =
changes appear within 4 weeks; functional improvements typically reported a=
t 2=E2=80=934 months.
Why I Think UA Is Underrated
Here=E2=80=99s my honest take after digging through this.
It targets mitophagy directly. Almost no other oral compound does this reli=
ably in humans. Mitophagy decline is one of the most fundamental drivers of=
 aging.
It=E2=80=99s a postbiotic, not a synthetic drug. Your gut already makes it,=
 sometimes. The body already has machinery to handle it. The safety profile=
 across trials reflects this.
The mechanisms are convergent. Mitochondrial quality, inflammation, senesce=
nce, neuroprotection, muscle function, cardiovascular function, immune func=
tion =E2=80=94 these aren=E2=80=99t separate problems. They=E2=80=99re all =
downstream of mitochondrial decline. A compound that addresses the upstream=
 cause has multi-system effects.
The human data is real. This isn=E2=80=99t a =E2=80=9Crodents only=E2=80=9D=
 story. We have multiple placebo-controlled human trials with measured outc=
omes in muscle biopsies, plasma biomarkers, and functional performance.
It pairs logically with other interventions. It doesn=E2=80=99t compete wit=
h peptides, exercise, or other longevity tools. It addresses a different la=
yer of the cellular machinery.
What I think holds it back from broader awareness: it=E2=80=99s not flashy =
or new, no instant subjective effect like a stimulant or peptide cycle. Eff=
ects are slow and structural, measured in weeks to months. Marketing has be=
en dominated by one premium-priced commercial brand, which has shaped the c=
onversation. And it doesn=E2=80=99t fit cleanly into the peptide narrative,=
 so peptide-focused communities (mine included) sometimes overlook it.
A Note on Product Quality
One thing worth flagging if you=E2=80=99re researching this further: the su=
pplement market for UA is a mess.
A lot of products labeled =E2=80=9CUrolithin A=E2=80=9D or =E2=80=9Cpomegra=
nate complex=E2=80=9D actually contain ellagitannin or ellagic acid blends =
=E2=80=94 the precursors, not UA itself. Remember, ~60% of people can=E2=80=
=99t efficiently convert those precursors. So buying a =E2=80=9Cpomegranate=
 extract=E2=80=9D hoping to get UA is essentially gambling on your microbio=
me.
When you check labels, you want to see Urolithin A listed directly as the a=
ctive ingredient, with a specified milligram amount =E2=80=94 not a =E2=80=
=9Cproprietary blend=E2=80=9D hiding the dose, and not just =E2=80=9Cellagi=
tannins=E2=80=9D or =E2=80=9Cellagic acid.=E2=80=9D
The honest reality: every single published human clinical trial on UA has u=
sed Mitopure, made by Amazentis and sold under the Timeline brand. It=E2=80=
=99s a patented form with greater than 98% purity. That=E2=80=99s not me se=
lling it =E2=80=94 that=E2=80=99s just what the literature shows. When rese=
archers wanted to study UA in humans, this is the form they used. Generic U=
A products may be perfectly fine, but they don=E2=80=99t have direct clinic=
al data behind them at specified doses. Some are well-tested by third parti=
es; others aren=E2=80=99t.
If you want the version that matches the clinical trial literature exactly:=
 Timeline Mitopure on Amazon [ https://substack.com/redirect/9a51ffdc-86b0-=
4f1a-9561-68d4a578ee7e?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p=
768BWtuZifRB-Zs ]
If you go with a generic UA product, look for:
Urolithin A listed as the active ingredient (not =E2=80=9Cpomegranate extra=
ct=E2=80=9D or =E2=80=9Cellagitannin complex=E2=80=9D)
A specified mg dose, 500 mg or 1000 mg per serving to match the trial doses
Third-party testing or COA available
A reputable brand with transparent sourcing
Either way =E2=80=94 verify the label says Urolithin A, not a precursor com=
plex.
Things Worth Researching Further
If you=E2=80=99re going down the rabbit hole, here=E2=80=99s what=E2=80=99s=
 worth understanding more deeply.
Mitophagy biology in general =E2=80=94 PINK1/Parkin, BNIP3, NIX pathways. T=
he hallmarks of aging (L=C3=B3pez-Ot=C3=ADn et al.) and where mitochondrial=
 dysfunction sits among them. Microbiome variability =E2=80=94 why some peo=
ple convert ellagitannins to UA and others don=E2=80=99t. Synergy with NAD+=
 precursors, exercise, and caloric restriction, all of which affect mitocho=
ndrial pathways. The 2025 Palikaras lab paper on calcium-dependent mitophag=
y and inter-organellar communication =E2=80=94 the most mechanistically sop=
histicated UA paper I=E2=80=99ve seen. And the question of long-term effect=
s: most trials are 4 weeks to 4 months. Lifespan-style data in humans doesn=
=E2=80=99t exist yet.
Final Thoughts
UA is one of those compounds that doesn=E2=80=99t get talked about enough b=
ecause it doesn=E2=80=99t have a sexy story. There=E2=80=99s no =E2=80=9Cyo=
u=E2=80=99ll feel it on day one.=E2=80=9D There=E2=80=99s no dramatic trans=
formation photo. What there is, is a steadily growing body of evidence that=
 it does something genuinely fundamental at the cellular level =E2=80=94 re=
storing a process that nearly every other longevity intervention is trying =
to influence indirectly.
If aging is partly a story about damaged mitochondria piling up faster than=
 your cells can clear them, UA is one of the few tools that addresses that =
exact problem head-on.
Whether that translates into long-term human longevity outcomes is a questi=
on the next decade of research will answer. But the mechanisms, the human s=
afety data, and the multi-system effects already make it worth knowing abou=
t deeply =E2=80=94 even if you never personally use it.
This is for research and educational purposes only. Nothing in this piece i=
s medical advice, and this isn=E2=80=99t a recommendation to use UA persona=
lly. If you=E2=80=99re interested in the topic for any non-research reason,=
 that=E2=80=99s a conversation for a qualified medical professional who kno=
ws your situation.
If this was useful, share it with someone who=E2=80=99s been chasing the lo=
ngevity rabbit hole and hasn=E2=80=99t come across UA yet =E2=80=94 and let=
 me know in the comments what underrated compound you=E2=80=99d like me to =
break down next.
=E2=80=94 Derek
References
Foundational mitophagy research
Ryu D, Mouchiroud L, Andreux PA, et al. Urolithin A induces mitophagy and p=
rolongs lifespan in C. elegans and increases muscle function in rodents. Na=
ture Medicine. 2016;22(8):879-888. doi:10.1038/nm.4132 [ https://substack.c=
om/redirect/123266d7-f61c-49ee-9bc7-5d377a6b5129?j=3DeyJ1IjoiNGl3b2U2In0.sV=
DxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs ]
Phase 1 human safety and bioavailability
Andreux PA, Blanco-Bose W, Ryu D, et al. The mitophagy activator urolithin =
A is safe and induces a molecular signature of improved mitochondrial and c=
ellular health in humans. Nature Metabolism. 2019;1(6):595-603. Full text [=
 https://substack.com/redirect/77a7a101-5fc6-4614-8917-4d826334ce9b?j=3DeyJ=
1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs ]
Phase 2 muscle strength and exercise performance trial (ATLAS)
Singh A, D=E2=80=99Amico D, Andreux PA, et al. Urolithin A improves muscle =
strength, exercise performance, and biomarkers of mitochondrial health in a=
 randomized trial in middle-aged adults. Cell Reports Medicine. 2022;3(5):1=
00633. Full text [ https://substack.com/redirect/38ff84f5-6c7e-4b1c-8da7-f7=
cf02576ee2?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB=
-Zs ]
2025 cardiovascular trial
Liu S, Faitg J, Tissot C, et al. Urolithin A provides cardioprotection and =
mitochondrial quality enhancement preclinically and improves human cardiova=
scular health biomarkers. iScience. 2025;28(2):111814. Full text [ https://=
substack.com/redirect/ea476dca-96a3-46fc-b75c-212710af7c34?j=3DeyJ1IjoiNGl3=
b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs ]
2025 calcium-dependent mitophagy and inter-organellar mechanism
Roussos A, Kitopoulou K, Borbolis F, et al. Urolithin A modulates inter-org=
anellar communication via calcium-dependent mitophagy to promote healthy ag=
eing. Autophagy. 2025;21(12):3097-3122. Full text [ https://substack.com/re=
direct/3499a6e7-ad17-41a0-a941-019a91cfbe64?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtm=
Z85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs ]
Muscle aging mechanism review
Faitg J, D=E2=80=99Amico D, Rinsch C, Singh A. Mitophagy Activation by Urol=
ithin A to Target Muscle Aging. Calcified Tissue International. 2024;114(1)=
:53-59. Full text [ https://substack.com/redirect/29fc570e-38cd-48c1-a27e-5=
facec5bcd12?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifR=
B-Zs ]
Sports nutrition applications
Emerging evidence of Urolithin A in sports nutrition: bridging preclinical =
findings to athletic applications. Frontiers in Nutrition. 2025;12:1585922.=
 Full text [ https://substack.com/redirect/05952cf0-46bd-4349-a898-ec7274d6=
c49e?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs ]
Alzheimer=E2=80=99s disease (preclinical)
Jayatunga DPW, Hone E, Khaira H, et al. Therapeutic Potential of Mitophagy-=
Inducing Microflora Metabolite, Urolithin A for Alzheimer=E2=80=99s Disease=
=2E Nutrients. 2021;13(11):3744. Full t=
ext [ https://substack.com/redirect/df=
689249-4bcc-4b86-b773-22b76169a0b0?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfda=
mY0krRXGMy3p768BWtuZifRB-Zs ]
Urolithin A improves Alzheimer=E2=80=99s disease cognition and restores mit=
ophagy and lysosomal functions. bioRxiv. 2024. Preprint [ https://substack.=
com/redirect/c01ee62d-a5a3-4ecf-b5cb-c9808da9e647?j=3DeyJ1IjoiNGl3b2U2In0.s=
VDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs ]
Parkinson=E2=80=99s disease (preclinical)
Urolithin A in Health and Diseases: Prospects for Parkinson=E2=80=99s Disea=
se Management. Antioxidants. 2023;12(7):1479. Full text [ https://substack.=
com/redirect/73066fc3-d988-493e-b431-ffe2bd11b7e7?j=3DeyJ1IjoiNGl3b2U2In0.s=
VDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs ]
Urolithin A improves Parkinson=E2=80=99s disease-associated cognitive impai=
rment through modulation of neuroinflammation and neuroplasticity. Experime=
ntal Neurology. 2025. PubMed [ https://substack.com/redirect/8e8387e2-d400-=
450f-b322-eaac0385504d?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p=
768BWtuZifRB-Zs ]
Comprehensive CNS review
Urolithin A in Central Nervous System Disorders: Therapeutic Applications a=
nd Challenges. Biomedicines. 2025;13(7):1553. Full text [ https://substack.=
com/redirect/2e1d546d-6551-4992-b6ac-87f2c20b044b?j=3DeyJ1IjoiNGl3b2U2In0.s=
VDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs ]
Heart failure (HFpEF)
Urolithin A Restores Mitochondrial Function and Reverses Cardiac Remodeling=
 in Heart Failure with Preserved Ejection Fraction. bioRxiv. 2025. Preprint=
 [ https://substack.com/redirect/08b19280-c64c-4a6e-bb10-2ac4d5272df6?j=3De=
yJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs ]
Independent supplement assessment
Alzheimer=E2=80=99s Drug Discovery Foundation Cognitive Vitality Report =E2=
=80=94 Urolithin A [ https://substack.com/redirect/a94e0897-1f8a-4f87-9f8b-=
37aa797b8427?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZif=
RB-Zs ]

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@media (min-width: 1024px) {
  .typography:not(:has(#toc)) .captioned-image-container figure:has(> a.ima=
ge2-offset-left),
  .typography.editor:not(:has(#toc)) .captioned-image-container figure:has(=
> a.image2-offset-left) {
    margin-left: var(--image-offset-margin);
  }
  .typography:not(:has(#toc)) .captioned-image-container figure:has(> a.ima=
ge2-offset-right),
  .typography.editor:not(:has(#toc)) .captioned-image-container figure:has(=
> a.image2-offset-right) {
    margin-right: var(--image-offset-margin);
  }
}
@media (min-width: 1300px) {
  .typography .captioned-image-container figure:has(> a.image2-offset-left)=
,
  .typography.editor .captioned-image-container figure:has(> a.image2-offse=
t-left) {
    margin-left: var(--image-offset-margin);
  }
  .typography .captioned-image-container figure:has(> a.image2-offset-right=
),
  .typography.editor .captioned-image-container figure:has(> a.image2-offse=
t-right) {
    margin-right: var(--image-offset-margin);
  }
}
@media (max-width: 1024px) {
  .typography,
  .typography.editor {
    /* Disable offset on mobile/tablet */
  }
  .typography .captioned-image-container figure:has(> a.image2-align-left),
  .typography.editor .captioned-image-container figure:has(> a.image2-align=
-left),
  .typography .captioned-image-container figure:has(> a.image2-align-right)=
,
  .typography.editor .captioned-image-container figure:has(> a.image2-align=
-right) {
    float: none;
    margin: 1em auto;
    max-width: 100%;
    width: auto;
    padding: 0;
  }
  .typography .captioned-image-container figure:has(> a.image2-align-left.t=
hefp),
  .typography.editor .captioned-image-container figure:has(> a.image2-align=
-left.thefp),
  .typography .captioned-image-container figure:has(> a.image2-align-right.=
thefp),
  .typography.editor .captioned-image-container figure:has(> a.image2-align=
-right.thefp) {
    margin: 1em auto;
  }
  .typography .captioned-image-container figure:has(> a.image2-offset-left)=
,
  .typography.editor .captioned-image-container figure:has(> a.image2-offse=
t-left),
  .typography .captioned-image-container figure:has(> a.image2-offset-right=
),
  .typography.editor .captioned-image-container figure:has(> a.image2-offse=
t-right) {
    margin: 1em auto;
  }
  .typography .captioned-image-container figure:has(> a.image2-align-left) =
=2Eimage2-inset,
  .typography.editor .captioned-image-container figure:has(> a.image2-align=
-left) .image2-inset,
  .typography .captioned-image-container figure:has(> a.image2-align-right)=
 .image2-inset,
  .typography.editor .captioned-image-container figure:has(> a.image2-align=
-right) .image2-inset {
    display: block;
    justify-content: initial;
  }
}
@media (max-width: 768px) {
  .typography .markup div.sponsorship-campaign-embed,
  .typography.editor .markup div.sponsorship-campaign-embed {
    margin-top: 24px;
    margin-bottom: 24px;
  }
  .typography .markup div.sponsorship-campaign-embed:first-child,
  .typography.editor .markup div.sponsorship-campaign-embed:first-child {
    margin-top: 0px;
  }
}
@media screen and (max-width: 650px) {
  .typography .markup div.youtube-overlay,
  .typography.editor .markup div.youtube-overlay,
  .typography .markup div.vimeo-overlay,
  .typography.editor .markup div.vimeo-overlay {
    display: none !important;
  }
}
@media screen and (max-width: 370px) {
  .typography .markup div.tiktok-wrap,
  .typography.editor .markup div.tiktok-wrap {
    width: calc(95vw - 32px);
    height: calc((95vw - 32px - 2px) / 0.485714);
  }
}
@media screen and (max-width: 650px) {
  .typography .markup div.embedded-publication-wrap .embedded-publication.s=
how-subscribe,
  .typography.editor .markup div.embedded-publication-wrap .embedded-public=
ation.show-subscribe {
    padding: 24px;
  }
}
@media screen and (max-width: 650px) {
  .typography .markup div.subscription-widget-wrap .subscription-widget.sho=
w-subscribe,
  .typography.editor .markup div.subscription-widget-wrap .subscription-wid=
get.show-subscribe,
  .typography .markup div.subscription-widget-wrap-editor .subscription-wid=
get.show-subscribe,
  .typography.editor .markup div.subscription-widget-wrap-editor .subscript=
ion-widget.show-subscribe,
  .typography .markup div.captioned-button-wrap .subscription-widget.show-s=
ubscribe,
  .typography.editor .markup div.captioned-button-wrap .subscription-widget=
=2Eshow-subscribe {
    padding: 0px 24px;
  }
}
@media screen and (max-width: 650px) {
  .typography .markup div.subscription-widget-wrap .subscription-widget.sho=
w-subscribe .subscription-widget-subscribe .button,
  .typography.editor .markup div.subscription-widget-wrap .subscription-wid=
get.show-subscribe .subscription-widget-subscribe .button,
  .typography .markup div.subscription-widget-wrap-editor .subscription-wid=
get.show-subscribe .subscription-widget-subscribe .button,
  .typography.editor .markup div.subscription-widget-wrap-editor .subscript=
ion-widget.show-subscribe .subscription-widget-subscribe .button,
  .typography .markup div.captioned-button-wrap .subscription-widget.show-s=
ubscribe .subscription-widget-subscribe .button,
  .typography.editor .markup div.captioned-button-wrap .subscription-widget=
=2Eshow-subscribe .subscription-widget-subscribe .button {
    padding: 10px 12px;
    min-width: 110px;
  }
}
@media (max-width: 650px) {
  .typography .markup .twitter-embed,
  .typography.editor .markup .twitter-embed,
  .typography .markup .tweet,
  .typography.editor .markup .tweet {
    padding: 12px;
  }
}
@media (max-width: 650px) {
  .typography .markup .twitter-embed .tweet-text,
  .typography.editor .markup .twitter-embed .tweet-text,
  .typography .markup .tweet .tweet-text,
  .typography.editor .markup .tweet .tweet-text {
    font-size: 14px;
    line-height: 20px;
  }
}
@media (max-width: 650px) {
  .typography .markup .twitter-embed .tweet-photos-container.two,
  .typography.editor .markup .twitter-embed .tweet-photos-container.two,
  .typography .markup .tweet .tweet-photos-container.two,
  .typography.editor .markup .tweet .tweet-photos-container.two,
  .typography .markup .twitter-embed .tweet-photos-container.three,
  .typography.editor .markup .twitter-embed .tweet-photos-container.three,
  .typography .markup .tweet .tweet-photos-container.three,
  .typography.editor .markup .tweet .tweet-photos-container.three,
  .typography .markup .twitter-embed .tweet-photos-container.four,
  .typography.editor .markup .twitter-embed .tweet-photos-container.four,
  .typography .markup .tweet .tweet-photos-container.four,
  .typography.editor .markup .tweet .tweet-photos-container.four {
    height: 200px;
  }
}
@media (max-width: 650px) {
  .typography .markup .twitter-embed a.expanded-link .expanded-link-img,
  .typography.editor .markup .twitter-embed a.expanded-link .expanded-link-=
img,
  .typography .markup .tweet a.expanded-link .expanded-link-img,
  .typography.editor .markup .tweet a.expanded-link .expanded-link-img {
    max-height: 180px;
  }
}
@media (max-width: 650px) {
  .typography .markup .twitter-embed a.expanded-link .expanded-link-descrip=
tion,
  .typography.editor .markup .twitter-embed a.expanded-link .expanded-link-=
description,
  .typography .markup .tweet a.expanded-link .expanded-link-description,
  .typography.editor .markup .tweet a.expanded-link .expanded-link-descript=
ion {
    display: none;
  }
}
@media screen and (max-width: 650px) {
  .typography .markup .apple-podcast-container,
  .typography.editor .markup .apple-podcast-container {
    width: unset;
  }
}
@media (max-width: 420px) {
  .typography .markup .install-substack-app-embed img.install-substack-app-=
embed-img,
  .typography.editor .markup .install-substack-app-embed img.install-substa=
ck-app-embed-img {
    margin: 0 auto 16px auto;
  }
}
@media (max-width: 420px) {
  .typography .markup .install-substack-app-embed .install-substack-app-emb=
ed-text,
  .typography.editor .markup .install-substack-app-embed .install-substack-=
app-embed-text {
    margin: 0 0 12px 0;
    max-width: 100%;
    width: auto;
    text-align: center;
  }
}
@media (max-width: 420px) {
  .typography .markup .install-substack-app-embed .install-substack-app-emb=
ed-link,
  .typography.editor .markup .install-substack-app-embed .install-substack-=
app-embed-link {
    display: flex;
    justify-content: center;
  }
}
@media screen and (min-width: 481px) {
  .share-button-container {
    height: 38px;
  }
}
@media screen and (min-width: 481px) {
  .share-button-container a.comment {
    height: 38px;
    line-height: 38px;
    padding-right: 10px;
  }
}
@media screen and (max-width: 480px) {
  .share-button-container .separator {
    display: block;
    margin: 0;
    height: 8px;
    border-left: none;
  }
}
@media screen and (max-width: 480px) {
  .share-button-container a.share.first img {
    padding-left: 0;
  }
}
@media screen and (min-width: 481px) {
  .share-button-container a.mobile {
    display: none !important;
  }
}
@media screen and (min-width: 541px) {
  .settings-add-pub-modal-wrapper .container .add-recommending-pub-modal-co=
ntainer {
    padding: 36px;
    height: 680px;
  }
}
@media screen and (min-width: 541px) {
  .settings-add-pub-modal-wrapper .container .add-recommending-pub-modal-co=
ntainer .footer {
    position: absolute;
    bottom: 36px;
    margin: 0px;
  }
}
@media screen and (max-width: 650px) {
  .header-anchor-parent {
    display: none;
  }
}
@media screen and (max-width: 768px) {
  .post {
    padding: 16px 0 0 0;
  }
}
@media screen and (max-width: 650px) {
  .post .post-header .post-label {
    margin-top: 8px;
  }
}
@media screen and (max-width: 650px) {
  .post .post-header .meta-author-wrap.alternative-meta .meta-right-column =
=2Epost-meta {
    margin-top: 6px;
  }
}
@media screen and (max-width: 650px) {
  .post .footer-facepile-container {
    height: 64px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
  }
}
@media screen and (max-width: 650px) {
  .post .post-footer.use-separators {
    justify-content: center;
  }
}
@media screen and (max-width: 650px) {
  .post .post-footer.next-prev {
    height: 64px;
    justify-content: space-between;
    box-sizing: border-box;
  }
}
@media screen and (max-width: 650px) {
  .post-contributor-footer .post-contributor-bio-table {
    display: block;
  }
  .post-contributor-footer .post-contributor-bio-table-row {
    display: flex;
    flex-direction: row;
  }
  .post-contributor-footer .post-contributor-bio-userhead-cell,
  .post-contributor-footer .post-contributor-bio-body-cell {
    display: block;
  }
  .post-contributor-footer .post-contributor-bio-body-cell {
    flex-grow: 1;
  }
  .post-contributor-footer .post-contributor-bio-body-table {
    display: block;
  }
  .post-contributor-footer .post-contributor-bio-body-table-row {
    display: block;
  }
  .post-contributor-footer .post-contributor-bio-copy-cell,
  .post-contributor-footer .post-contributor-bio-controls-cell {
    display: block;
  }
  .post-contributor-footer .post-contributor-bio-copy-cell {
    margin: 0 0 16px 0;
  }
  .post-contributor-footer .post-contributor-bio-controls-cell {
    width: auto;
  }
  .post-contributor-footer .post-contributor-bio-controls {
    margin: auto;
  }
  .post-contributor-footer .post-contributor-bio-controls .button.primary {
    width: 100%;
  }
  .post-contributor-footer .post-contributor-bio-text {
    font-size: 14px;
  }
}
@media screen and (min-width: 768px) {
  .post-silhouette {
    padding: 32px 0;
  }
}
@media screen and (max-width: 650px) {
  .post-silhouette .post-silhouette-title {
    margin-top: 10.44225025px;
    height: 120px;
  }
}
@media screen and (max-width: 650px) {
  .post-silhouette .post-silhouette-meta {
    width: 75%;
  }
}
@media screen and (max-width: 650px) {
  .post-silhouette .post-silhouette-meta.with-byline-image {
    margin: 20px 0;
  }
}
@media screen and (max-width: 650px) {
  .use-theme-bg .post-meta.alternative-meta .post-meta-item,
  .post-meta.alternative-meta .post-meta-item {
    padding-right: 16px;
  }
}
@media screen and (max-width: 370px) {
  .use-theme-bg .post-meta.alternative-meta .post-meta-item,
  .post-meta.alternative-meta .post-meta-item {
    font-size: 14px;
  }
}
@media screen and (max-width: 650px) {
  .use-theme-bg .post-meta.alternative-meta .post-meta-item.guest-author-pu=
blication,
  .post-meta.alternative-meta .post-meta-item.guest-author-publication {
    display: none;
  }
}
@media screen and (max-width: 370px) {
  .post-meta .post-meta-item .post-meta-button {
    height: 36px !important;
    /* important to override in-line height style on emails */
  }
  .post-meta .post-meta-item .post-meta-button .meta-button-label {
    display: none;
  }
  .post-meta .post-meta-item .post-meta-button > svg {
    margin-right: 0;
  }
}
@media screen and (max-width: 370px) {
  .post-meta .post-meta-item {
    font-size: 12px;
  }
}
@media screen and (max-width: 650px) {
  .post .floating-subscribe-button {
    bottom: 20px;
    right: 20px;
  }
}
@media (max-width: 1024px) {
  body .pullquote-align-left,
  body .pullquote-align-right,
  body .pullquote-align-wide,
  body .pullquote-align-center {
    float: none;
    margin: 0 auto;
    width: 100%;
    max-width: 100%;
  }
}
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
  body .markup table.image-wrapper img,
  body .markup table.kindle-wrapper img {
    max-width: 550px;
  }
}
@media (min-width: 1024px) {
  body:not(:has(#toc)) .captioned-image-container figure:has(> a.image2-off=
set-left) {
    margin-left: var(--image-offset-margin);
  }
  body:not(:has(#toc)) .captioned-image-container figure:has(> a.image2-off=
set-right) {
    margin-right: var(--image-offset-margin);
  }
}
@media (min-width: 1300px) {
  body .captioned-image-container figure:has(> a.image2-offset-left) {
    margin-left: var(--image-offset-margin);
  }
  body .captioned-image-container figure:has(> a.image2-offset-right) {
    margin-right: var(--image-offset-margin);
  }
}
@media (max-width: 1024px) {
  body {
    /* Disable offset on mobile/tablet */
  }
  body .captioned-image-container figure:has(> a.image2-align-left),
  body .captioned-image-container figure:has(> a.image2-align-right) {
    float: none;
    margin: 1em auto;
    max-width: 100%;
    width: auto;
    padding: 0;
  }
  body .captioned-image-container figure:has(> a.image2-align-left.thefp),
  body .captioned-image-container figure:has(> a.image2-align-right.thefp) =
{
    margin: 1em auto;
  }
  body .captioned-image-container figure:has(> a.image2-offset-left),
  body .captioned-image-container figure:has(> a.image2-offset-right) {
    margin: 1em auto;
  }
  body .captioned-image-container figure:has(> a.image2-align-left) .image2=
-inset,
  body .captioned-image-container figure:has(> a.image2-align-right) .image=
2-inset {
    display: block;
    justify-content: initial;
  }
}
@media (max-width: 768px) {
  body .markup div.sponsorship-campaign-embed {
    margin-top: 24px;
    margin-bottom: 24px;
  }
  body .markup div.sponsorship-campaign-embed:first-child {
    margin-top: 0px;
  }
}
@media screen and (max-width: 650px) {
  body .markup div.youtube-overlay,
  body .markup div.vimeo-overlay {
    display: none !important;
  }
}
@media screen and (max-width: 370px) {
  body .markup div.tiktok-wrap {
    width: calc(95vw - 32px);
    height: calc((95vw - 32px - 2px) / 0.485714);
  }
}
@media screen and (max-width: 650px) {
  body .markup div.embedded-publication-wrap .embedded-publication.show-sub=
scribe {
    padding: 24px;
  }
}
@media screen and (max-width: 650px) {
  body .markup div.subscription-widget-wrap .subscription-widget.show-subsc=
ribe,
  body .markup div.subscription-widget-wrap-editor .subscription-widget.sho=
w-subscribe,
  body .markup div.captioned-button-wrap .subscription-widget.show-subscrib=
e {
    padding: 0px 24px;
  }
}
@media screen and (max-width: 650px) {
  body .markup div.subscription-widget-wrap .subscription-widget.show-subsc=
ribe .subscription-widget-subscribe .button,
  body .markup div.subscription-widget-wrap-editor .subscription-widget.sho=
w-subscribe .subscription-widget-subscribe .button,
  body .markup div.captioned-button-wrap .subscription-widget.show-subscrib=
e .subscription-widget-subscribe .button {
    padding: 10px 12px;
    min-width: 110px;
  }
}
@media (max-width: 650px) {
  body .markup .twitter-embed,
  body .markup .tweet {
    padding: 12px;
  }
}
@media (max-width: 650px) {
  body .markup .twitter-embed .tweet-text,
  body .markup .tweet .tweet-text {
    font-size: 14px;
    line-height: 20px;
  }
}
@media (max-width: 650px) {
  body .markup .twitter-embed .tweet-photos-container.two,
  body .markup .tweet .tweet-photos-container.two,
  body .markup .twitter-embed .tweet-photos-container.three,
  body .markup .tweet .tweet-photos-container.three,
  body .markup .twitter-embed .tweet-photos-container.four,
  body .markup .tweet .tweet-photos-container.four {
    height: 200px;
  }
}
@media (max-width: 650px) {
  body .markup .twitter-embed a.expanded-link .expanded-link-img,
  body .markup .tweet a.expanded-link .expanded-link-img {
    max-height: 180px;
  }
}
@media (max-width: 650px) {
  body .markup .twitter-embed a.expanded-link .expanded-link-description,
  body .markup .tweet a.expanded-link .expanded-link-description {
    display: none;
  }
}
@media screen and (max-width: 650px) {
  body .markup .apple-podcast-container {
    width: unset;
  }
}
@media (max-width: 420px) {
  body .markup .install-substack-app-embed img.install-substack-app-embed-i=
mg {
    margin: 0 auto 16px auto;
  }
}
@media (max-width: 420px) {
  body .markup .install-substack-app-embed .install-substack-app-embed-text=
 {
    margin: 0 0 12px 0;
    max-width: 100%;
    width: auto;
    text-align: center;
  }
}
@media (max-width: 420px) {
  body .markup .install-substack-app-embed .install-substack-app-embed-link=
 {
    display: flex;
    justify-content: center;
  }
}
@media screen and (min-width: 500px) {
  body .header a.logo {
    width: 42px;
    height: 42px;
    border-radius: 12px;
  }
}
@media screen and (max-width: 420px) {
  body .subscription-receipt table:first-of-type .subscription-amount .subs=
cription-discount {
    width: 72px !important;
  }
}
@media screen and (min-width: 481px) {
  body .share-button-container {
    height: auto;
  }
}
@media screen and (max-width: 480px) {
  body .share-button-container .separator {
    display: block !important;
    margin: 0 !important;
    height: 8px !important;
    border-left: none !important;
  }
}
@media screen and (max-width: 650px) {
  .digest .item .post-meta-item.audience {
    display: none;
  }
}
@media screen and (min-width: 500px) {
  .digest-publication .logo img {
    width: 42px;
    height: 42px;
    border-radius: 8px;
  }
}
@media screen and (max-width: 650px) {
  .comments-page .container .comment-list .collapsed-reply {
    margin-left: calc(10 + 32px - 24px);
  }
}
@media screen and (max-width: 650px) {
  .comment > .comment-list {
    padding-left: 24px;
  }
}
@media screen and (max-width: 650px) {
  .finish-magic-login-modal .modal-content .container {
    padding: 24px 0;
  }
}
@media (max-width: 650px) {
  .reader2-text-b3 {
    line-height: 24px;
  }
}
@media screen and (max-width: 650px) {
  .reader2-text-h4 {
    line-height: 24px;
  }
}
@media screen and (min-width: 541px) {
  .user-profile-modal {
    padding-left: 12px;
    padding-right: 12px;
  }
}
@media screen and (max-width: 650px) {
  .subscribe-widget form.form .sideBySideWrap button.rightButton {
    padding: 10px 12px;
  }
}
@media screen and (min-width: 541px) {
  .pub-icon:hover .logo-hover,
  .feed-item-icon:hover .logo-hover {
    display: block;
  }
}
@media screen and (max-width: 650px) {
  .post-ufi.single-full-width-button .post-ufi-button-wrapper {
    width: 100%;
    padding: 16px;
  }
  .post-ufi.single-full-width-button .post-ufi-button-wrapper:empty {
    display: none;
  }
  .post-ufi.single-full-width-button .post-ufi-button {
    width: 100%;
    justify-content: center;
  }
}
@media screen and (max-width: 768px) {
  .file-embed-wrapper {
    padding: 0;
  }
}
@media screen and (max-width: 768px) {
  .file-embed-wrapper-editor {
    padding: 0;
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age-offset-margin: -120px;"><img src=3D"https://eotrx.substackcdn.com/o/2d4=
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t-size:1px;color:#333333;line-height:1px;max-height:0px;max-width:0px;opaci=
ty:0;overflow:hidden;">A postbiotic that targets the upstream cause of agin=
g &#8212; and why almost nobody in the peptide world is talking about it</d=
iv><div class=3D"preview" style=3D"display:none;font-size:1px;color:#333333=
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&nbsp; &#8199; &#173;&#847; &nbsp; &#8199; &#173;</div><table class=3D"emai=
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cing=3D"0" cellpadding=3D"0"><tbody><tr><td></td><td class=3D"content" widt=
h=3D"550"></td><td></td></tr><tr><td></td><td class=3D"content" width=3D"55=
0" align=3D"left"><div style=3D"font-size: 16px;line-height: 26px;max-width=
: 550px;width: 100%;margin: 0 auto;overflow-wrap: break-word;"><table role=
=3D"presentation" width=3D"100%" border=3D"0" cellspacing=3D"0" cellpadding=
=3D"0"><tbody><tr><td align=3D"right" style=3D"height:20px;"><table role=3D=
"presentation" width=3D"auto" border=3D"0" cellspacing=3D"0" cellpadding=3D=
"0"><tbody><tr><td style=3D"vertical-align:middle;"><span class=3D"pencraft=
 pc-reset reset-IxiVJZ tw-font-body tw-text-ssm tw-text-substack-secondary"=
 style=3D"font-family: SF Pro Text, -apple-system, system-ui, BlinkMacSyste=
mFont, Inter, Segoe UI, Roboto, Helvetica, Arial, sans-serif, Apple Color E=
moji, Segoe UI Emoji, Segoe UI Symbol;font-size: 13px;color: unset;list-sty=
le: none;text-decoration: unset;margin: 0;"><div class=3D"pencraft pc-reset=
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nslated=3D"" style=3D"list-style: none;color: unset;text-decoration: unset;=
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3N0LXVuZGVycmF0ZWQtY29tcG91bmQiLCJwIjoxOTYyMjc3MjAsInMiOjMzNjUzNjcsImYiOnRy=
dWUsInUiOjI3MzYyMjM5OCwiaWF0IjoxNzc3NzM1MDMwLCJleHAiOjIwOTMzMTEwMzAsImlzcyI=
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margin: 0;-webkit-text-decoration-line: underline;text-decoration-line: und=
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x;line-height: 26px;"><div class=3D"post-header" role=3D"region" aria-label=
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post-title published title-X77sOw" dir=3D"auto" style=3D"direction: auto;te=
xt-align: start;unicode-bidi: isolate;color: rgb(54,55,55);font-family: 'SF=
 Pro Display',-apple-system-headline,system-ui,-apple-system,BlinkMacSystem=
Font,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple Color Emoji','Sego=
e UI Emoji','Segoe UI Symbol';font-weight: bold;-webkit-font-smoothing: ant=
ialiased;-moz-osx-font-smoothing: antialiased;-webkit-appearance: optimizel=
egibility;-moz-appearance: optimizelegibility;appearance: optimizelegibilit=
y;margin: 0;line-height: 36px;font-size: 32px;"><a href=3D"https://substack=
=2Ecom/app-link/post?publication_id=3D3=
365367&post_id=3D196227720&utm_source=
=3Dpost-email-title&utm_campaign=3Demail-post-title&isFreemail=3Dtrue&r=3D4=
iwoe6&token=3DeyJ1c2VyX2lkIjoyNzM2MjIzOTgsInBvc3RfaWQiOjE5NjIyNzcyMCwiaWF0I=
joxNzc3NzM1MDMwLCJleHAiOjE3ODAzMjcwMzAsImlzcyI6InB1Yi0zMzY1MzY3Iiwic3ViIjoi=
cG9zdC1yZWFjdGlvbiJ9.1RWVkhk9iew0AifllgYK_z4WnkZcSGYvmyrpQRyBpYs" style=3D"=
color: rgb(54,55,55);text-decoration: none;">Urolithin A: The Most Underrat=
ed Compound in Longevity</a></h1><h3 class=3D"subtitle subtitle-HEEcLo" dir=
=3D"auto" style=3D"direction: auto;text-align: start;unicode-bidi: isolate;=
font-family: 'SF Pro Display',-apple-system-headline,system-ui,-apple-syste=
m,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple Co=
lor Emoji','Segoe UI Emoji','Segoe UI Symbol';font-weight: normal;-webkit-f=
ont-smoothing: antialiased;-moz-osx-font-smoothing: antialiased;-webkit-app=
earance: optimizelegibility;-moz-appearance: optimizelegibility;appearance:=
 optimizelegibility;margin: 4px 0 0;color: #777777;line-height: 24px;font-s=
ize: 18px;margin-top: 12px;">A postbiotic that targets the upstream cause o=
f aging &#8212; and why almost nobody in the peptide world is talking about=
 it</h3><table class=3D"post-meta" role=3D"presentation" width=3D"100%" bor=
der=3D"0" cellspacing=3D"0" cellpadding=3D"0" style=3D"margin: 1em 0;height=
: 20px;align-items: center;"><tbody><tr><td><table role=3D"presentation" wi=
dth=3D"auto" border=3D"0" cellspacing=3D"0" cellpadding=3D"0"><tbody><tr><t=
d><table role=3D"presentation" width=3D"auto" border=3D"0" cellspacing=3D"0=
" cellpadding=3D"0"><tbody><tr><td style=3D"vertical-align:middle;"><div cl=
ass=3D"pencraft pc-reset color-primary-zABazT line-height-20-t4M0El font-me=
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ystem,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Appl=
e Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-weight: 500;text-tra=
nsform: uppercase;letter-spacing: .2px;"><a class=3D"pencraft pc-reset colo=
r-primary-zABazT line-height-20-t4M0El font-meta-MWBumP size-11-NuY2Zx weig=
ht-medium-fw81nC transform-uppercase-yKDgcq reset-IxiVJZ meta-EgzBVA" style=
=3D"list-style: none;color: rgb(54,55,55);margin: 0;font-size: 11px;line-he=
ight: 20px;font-family: 'SF Compact',-apple-system,system-ui,-apple-system,=
BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple Colo=
r Emoji','Segoe UI Emoji','Segoe UI Symbol';font-weight: 500;text-transform=
: uppercase;letter-spacing: .2px;text-decoration: none" href=3D"https://sub=
stack.com/@dereksresearchradar">Derek</a></div></td></tr></tbody></table></=
td></tr><tr><td><table role=3D"presentation" width=3D"auto" border=3D"0" ce=
llspacing=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"vertical-align:mi=
ddle;"><div class=3D"pencraft pc-reset color-secondary-ls1g8s line-height-2=
0-t4M0El font-meta-MWBumP size-11-NuY2Zx weight-medium-fw81nC transform-upp=
ercase-yKDgcq reset-IxiVJZ meta-EgzBVA" style=3D"list-style: none;font-size=
: 11px;line-height: 20px;text-decoration: unset;color: rgb(119,119,119);mar=
gin: 0;font-family: 'SF Compact',-apple-system,system-ui,-apple-system,Blin=
kMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple Color Em=
oji','Segoe UI Emoji','Segoe UI Symbol';font-weight: 500;text-transform: up=
percase;letter-spacing: .2px;"><time datetime=3D"2026-05-02T15:16:56.636Z">=
May 2</time></div></td></tr></tbody></table></td></tr></tbody></table></td>=
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</table></td></tr></tbody></table></td></tr><tr height=3D"16"><td height=3D=
"16" style=3D"font-size:0px;line-height:0;">&nbsp;</td></tr></tbody></table=
></div></div><div class=3D"post typography" dir=3D"auto" style=3D"--image-o=
ffset-margin: -120px;padding: 32px 0 0 0;font-size: 16px;line-height: 26px;=
"><div class=3D"body markup" dir=3D"auto" style=3D"text-align: initial;font=
-size: 16px;line-height: 26px;width: 100%;word-break: break-word;margin-bot=
tom: 16px;"><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height=
: 26px;font-size: 16px;margin-top: 0;"><em>Research and educational purpose=
s only. Nothing in this piece is medical advice. If you&#8217;re considerin=
g anything personally, that&#8217;s a conversation for a qualified clinicia=
n.</em></p><div style=3D"font-size: 16px;line-height: 26px;"><hr style=3D"m=
argin: 32px 0;padding: 0;height: 1px;background: rgb(0,0,0,.1);border: none=
;"></div><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 2=
6px;font-size: 16px;"><span>I want to talk about something that isn&#8217;t=
 a peptide but probably deserves a permanent spot in the longevity conversa=
tion alongside them: </span><strong>Urolithin A</strong><span>.</span></p><=
div class=3D"captioned-image-container-static" style=3D"font-size: 16px;lin=
e-height: 26px;margin: 32px auto;"><figure style=3D"width: 100%;margin: 0 a=
uto;"><table class=3D"image-wrapper" width=3D"100%" border=3D"0" cellspacin=
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er;"></td><td class=3D"content" align=3D"left" width=3D"1456" style=3D"text=
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ative;flex-direction: column;align-items: center;padding: 0;width: auto;hei=
ght: auto;border: none;text-decoration: none;display: block;margin: 0;"><im=
g class=3D"wide-image" data-attrs=3D"{&quot;src&quot;:&quot;https://substac=
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e !important;vertical-align: middle;display: block;-ms-interpolation-mode: =
bicubic;height: auto;margin-bottom: 0;width: auto !important;max-width: 100=
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odHRwcyUzQSUyRiUyRmRlcmVrcHJ1c2tpLnN1YnN0YWNrLmNvbSUyRnAlMkZ1cm9saXRoaW4tYS=
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scribe-widget&utm_content=3D196227720" style=3D"font-family: system-ui,-app=
le-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'=
Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';display: inline-block=
;box-sizing: border-box;cursor: pointer;border: none;border-radius: 8px;fon=
t-size: 14px;line-height: 20px;font-weight: 600;text-align: center;opacity:=
 1;outline: none;white-space: nowrap;text-decoration: none !important;margi=
n: 0 auto;background-color: #FF6719;color: #ffffff !important;padding: 12px=
 20px;height: auto;"><span style=3D"color: #ffffff;text-decoration: none;">=
Upgrade to paid</span></a></div></div><p style=3D"margin: 0 0 20px 0;color:=
 rgb(54,55,55);line-height: 26px;font-size: 16px;">If you&#8217;ve been aro=
und the research community long enough, you&#8217;ve heard of NAD+, rapamyc=
in, metformin, GLP-1s, GHK-Cu, MOTS-c, SS-31. All of them have legitimate m=
echanisms. Urolithin A &#8212; UA from here on &#8212; quietly checks more =
boxes than almost anything I&#8217;ve come across, and I rarely see it disc=
ussed at the depth it deserves.</p><p style=3D"margin: 0 0 20px 0;color: rg=
b(54,55,55);line-height: 26px;font-size: 16px;">This piece walks through wh=
at it is, how it works, the mechanisms relevant to aging and neurodegenerat=
ion, what the human data actually shows, and how researchers are thinking a=
bout it. Beginner-friendly, but with enough depth to be genuinely useful.</=
p><h2 class=3D"header-anchor-post" style=3D"position: relative;font-family:=
 'SF Pro Display',-apple-system-headline,system-ui,-apple-system,BlinkMacSy=
stemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple Color Emoji','=
Segoe UI Emoji','Segoe UI Symbol';font-weight: bold;-webkit-font-smoothing:=
 antialiased;-moz-osx-font-smoothing: antialiased;-webkit-appearance: optim=
izelegibility;-moz-appearance: optimizelegibility;appearance: optimizelegib=
ility;margin: 1em 0 0.625em 0;color: rgb(54,55,55);line-height: 1.16em;font=
-size: 1.625em;">What Urolithin A Actually Is</h2><p style=3D"margin: 0 0 2=
0px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><span>UA is =
a </span><strong>postbiotic</strong><span> &#8212; a compound your gut bact=
eria produce when they metabolize certain dietary precursors called </span>=
<em>ellagitannins</em><span> and </span><em>ellagic acid</em><span>. Those =
precursors are found in pomegranates (the highest source), walnuts, strawbe=
rries, raspberries, blackberries, and almonds.</span></p><p style=3D"margin=
: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">Sound=
s simple. Eat the foods, get the compound. Here&#8217;s the catch:</p><bloc=
kquote style=3D"border-left: 4px solid #FF6719;margin: 20px 0;padding: 0;">=
<p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);margin-left: 20px;line-=
height: 26px;font-size: 16px;">Roughly 60% of people lack the specific gut =
bacteria needed to convert ellagitannins into UA. Even among the ~40% who c=
an produce it, the amounts vary wildly based on microbiome composition, die=
t, age, and antibiotic history.</p></blockquote><p style=3D"margin: 0 0 20p=
x 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">This is why di=
rect UA supplementation became a research area to begin with. It bypasses t=
he microbiome lottery.</p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,5=
5);line-height: 26px;font-size: 16px;"><span>UA was first identified as a m=
itophagy inducer in a 2016 </span><em>Nature Medicine</em><span> paper from=
 researchers at Amazentis and EPFL, where it extended lifespan in </span><e=
m>C. elegans</em><span> and improved muscle function in rodents. Since then=
 the research has exploded.</span></p><h2 class=3D"header-anchor-post" styl=
e=3D"position: relative;font-family: 'SF Pro Display',-apple-system-headlin=
e,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Ar=
ial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-=
weight: bold;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: a=
ntialiased;-webkit-appearance: optimizelegibility;-moz-appearance: optimize=
legibility;appearance: optimizelegibility;margin: 1em 0 0.625em 0;color: rg=
b(54,55,55);line-height: 1.16em;font-size: 1.625em;">The Master Mechanism: =
Mitophagy</h2><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-heig=
ht: 26px;font-size: 16px;">To understand why UA matters, you have to unders=
tand mitophagy.</p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line=
-height: 26px;font-size: 16px;">Mitochondria are the energy producers insid=
e every cell. They make ATP, regulate cell death, handle calcium, and produ=
ce reactive oxygen species. They&#8217;re also one of the first things to b=
reak down with age.</p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);=
line-height: 26px;font-size: 16px;">Here&#8217;s the problem: as you age, y=
our cells stop efficiently clearing out damaged mitochondria. Dysfunctional=
 mitochondria pile up, leak oxidative stress, fail to make energy efficient=
ly, and contribute to nearly every &#8220;hallmark of aging&#8221; you can =
name.</p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 2=
6px;font-size: 16px;"><strong>Mitophagy</strong><span> is the cellular clea=
nup process that selectively removes damaged mitochondria so new, healthy o=
nes can take their place. It&#8217;s one of the most important quality-cont=
rol systems in the body.</span></p><p style=3D"margin: 0 0 20px 0;color: rg=
b(54,55,55);line-height: 26px;font-size: 16px;"><span>UA is one of the only=
 known compounds that </span><em>directly and reliably</em><span> induces m=
itophagy in humans at oral doses. That alone would be remarkable. But the d=
ownstream effects of restoring mitophagy ripple through nearly every aging-=
related system.</span></p><h2 class=3D"header-anchor-post" style=3D"positio=
n: relative;font-family: 'SF Pro Display',-apple-system-headline,system-ui,=
-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-ser=
if,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-weight: bold=
;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: antialiased;-=
webkit-appearance: optimizelegibility;-moz-appearance: optimizelegibility;a=
ppearance: optimizelegibility;margin: 1em 0 0.625em 0;color: rgb(54,55,55);=
line-height: 1.16em;font-size: 1.625em;">Mechanisms Relevant to Aging</h2><=
p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-s=
ize: 16px;">Let&#8217;s break down what researchers have actually documente=
d.</p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px=
;font-size: 16px;"><strong>Mitochondrial quality control.</strong><span> UA=
 activates the PINK1/Parkin pathway &#8212; the primary signaling cascade t=
hat tags damaged mitochondria for removal. In human muscle biopsies from cl=
inical trials, UA supplementation increased expression of mitophagy genes i=
ncluding PINK1, Parkin, ATG7, and LC3B. This isn&#8217;t theoretical. It&#8=
217;s been measured in human tissue.</span></p><p style=3D"margin: 0 0 20px=
 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong>Mitocho=
ndrial biogenesis.</strong><span> After clearing damaged mitochondria, you =
need new ones. UA upregulates pathways involved in making fresh mitochondri=
a, including AMPK signaling and Nrf2 activation. Research published in 2025=
 also identified the SKN-1/Nrf2 and CAMK2D pathways as essential for UA&#82=
17;s lifespan-extending effects.</span></p><p style=3D"margin: 0 0 20px 0;c=
olor: rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong>Calcium sig=
naling and inter-organellar communication.</strong><span> Newer 2025 resear=
ch from the Palikaras lab showed UA modulates calcium signaling between the=
 ER, mitochondria, and lysosomes &#8212; restoring &#8220;crosstalk&#8221; =
between these organelles that breaks down with age. Calcium chelation compl=
etely abolished UA&#8217;s benefits, which tells us calcium signaling is ce=
ntral to how it works.</span></p><p style=3D"margin: 0 0 20px 0;color: rgb(=
54,55,55);line-height: 26px;font-size: 16px;"><strong>Reduced cellular sene=
scence.</strong><span> Senescent cells &#8212; the so-called &#8220;zombie =
cells&#8221; &#8212; are dysfunctional cells that don&#8217;t die when they=
 should and pump out inflammatory signals. UA mitigates stress-induced sene=
scence in mammalian cells in a calcium-dependent manner.</span></p><p style=
=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16=
px;"><strong>Anti-inflammatory effects.</strong><span> UA reduces systemic =
inflammation. Human trials have shown reductions in C-reactive protein (CRP=
) &#8212; a major inflammation biomarker. It modulates NF-&#954;B signaling=
 and reduces pro-inflammatory cytokines.</span></p><p style=3D"margin: 0 0 =
20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong>Imp=
roved mitochondrial efficiency.</strong><span> Plasma acylcarnitines &#8212=
; markers of inefficient fatty acid oxidation &#8212; decrease with UA supp=
lementation in humans, indicating mitochondria are processing fuel more eff=
iciently.</span></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);lin=
e-height: 26px;font-size: 16px;"><strong>AhR/Nrf2 antioxidant activation.</=
strong><span> UA activates the aryl hydrocarbon receptor and Nrf2 pathways,=
 which collectively drive expression of antioxidant defense genes and reduc=
e oxidative stress.</span></p><h2 class=3D"header-anchor-post" style=3D"pos=
ition: relative;font-family: 'SF Pro Display',-apple-system-headline,system=
-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans=
-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-weight: =
bold;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: antialias=
ed;-webkit-appearance: optimizelegibility;-moz-appearance: optimizelegibili=
ty;appearance: optimizelegibility;margin: 1em 0 0.625em 0;color: rgb(54,55,=
55);line-height: 1.16em;font-size: 1.625em;">Mechanisms Relevant to Neurode=
generation</h2><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-hei=
ght: 26px;font-size: 16px;">This is the section that doesn&#8217;t get enou=
gh attention. UA crosses the blood-brain barrier, and the preclinical neuro=
protective data is genuinely impressive across multiple disease models.</p>=
<h3 class=3D"header-anchor-post" style=3D"position: relative;font-family: '=
SF Pro Display',-apple-system-headline,system-ui,-apple-system,BlinkMacSyst=
emFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple Color Emoji','Se=
goe UI Emoji','Segoe UI Symbol';font-weight: bold;-webkit-font-smoothing: a=
ntialiased;-moz-osx-font-smoothing: antialiased;-webkit-appearance: optimiz=
elegibility;-moz-appearance: optimizelegibility;appearance: optimizelegibil=
ity;margin: 1em 0 0.625em 0;color: rgb(54,55,55);line-height: 1.16em;font-s=
ize: 1.375em;">Alzheimer&#8217;s disease (preclinical)</h3><p style=3D"marg=
in: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">In =
multiple AD mouse models &#8212; APP/PS1, 3xTgAD, and DNA-repair-deficient =
ADP mice &#8212; UA treatment has been shown to:</p><ul style=3D"margin-top=
: 0;padding: 0;"><li style=3D"margin: 8px 0 0 32px;mso-special-format: bull=
et;"><p style=3D"color: rgb(54,55,55);line-height: 26px;margin-bottom: 0;bo=
x-sizing: border-box;padding-left: 4px;font-size: 16px;margin: 0;">Reduce a=
myloid-beta plaque accumulation</p></li><li style=3D"margin: 8px 0 0 32px;m=
so-special-format: bullet;"><p style=3D"color: rgb(54,55,55);line-height: 2=
6px;margin-bottom: 0;box-sizing: border-box;padding-left: 4px;font-size: 16=
px;margin: 0;">Decrease tau hyperphosphorylation</p></li><li style=3D"margi=
n: 8px 0 0 32px;mso-special-format: bullet;"><p style=3D"color: rgb(54,55,5=
5);line-height: 26px;margin-bottom: 0;box-sizing: border-box;padding-left: =
4px;font-size: 16px;margin: 0;">Improve cognition on standard memory tests<=
/p></li><li style=3D"margin: 8px 0 0 32px;mso-special-format: bullet;"><p s=
tyle=3D"color: rgb(54,55,55);line-height: 26px;margin-bottom: 0;box-sizing:=
 border-box;padding-left: 4px;font-size: 16px;margin: 0;">Restore mitophagy=
 and lysosomal function in neurons</p></li><li style=3D"margin: 8px 0 0 32p=
x;mso-special-format: bullet;"><p style=3D"color: rgb(54,55,55);line-height=
: 26px;margin-bottom: 0;box-sizing: border-box;padding-left: 4px;font-size:=
 16px;margin: 0;">Inhibit DYRK1A, a kinase implicated in tau pathology and =
Down syndrome&#8211;associated AD</p></li><li style=3D"margin: 8px 0 0 32px=
;mso-special-format: bullet;"><p style=3D"color: rgb(54,55,55);line-height:=
 26px;margin-bottom: 0;box-sizing: border-box;padding-left: 4px;font-size: =
16px;margin: 0;">Reduce neuroinflammation</p></li></ul><p style=3D"margin: =
0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">The pro=
posed mechanism: AD brains accumulate damaged mitochondria and fail to clea=
r them. UA restores that cleanup, and the downstream effect appears to be p=
rotection of neurons from amyloid and tau toxicity.</p><h3 class=3D"header-=
anchor-post" style=3D"position: relative;font-family: 'SF Pro Display',-app=
le-system-headline,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Ro=
boto,Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe=
 UI Symbol';font-weight: bold;-webkit-font-smoothing: antialiased;-moz-osx-=
font-smoothing: antialiased;-webkit-appearance: optimizelegibility;-moz-app=
earance: optimizelegibility;appearance: optimizelegibility;margin: 1em 0 0.=
625em 0;color: rgb(54,55,55);line-height: 1.16em;font-size: 1.375em;">Parki=
nson&#8217;s disease (preclinical)</h3><p style=3D"margin: 0 0 20px 0;color=
: rgb(54,55,55);line-height: 26px;font-size: 16px;">In MPTP-induced PD mode=
ls and A53T &#945;-synuclein transgenic mice, UA has demonstrated:</p><ul s=
tyle=3D"margin-top: 0;padding: 0;"><li style=3D"margin: 8px 0 0 32px;mso-sp=
ecial-format: bullet;"><p style=3D"color: rgb(54,55,55);line-height: 26px;m=
argin-bottom: 0;box-sizing: border-box;padding-left: 4px;font-size: 16px;ma=
rgin: 0;">Protection of dopaminergic neurons from MPTP-induced damage</p></=
li><li style=3D"margin: 8px 0 0 32px;mso-special-format: bullet;"><p style=
=3D"color: rgb(54,55,55);line-height: 26px;margin-bottom: 0;box-sizing: bor=
der-box;padding-left: 4px;font-size: 16px;margin: 0;">Reduction of motor de=
ficits</p></li><li style=3D"margin: 8px 0 0 32px;mso-special-format: bullet=
;"><p style=3D"color: rgb(54,55,55);line-height: 26px;margin-bottom: 0;box-=
sizing: border-box;padding-left: 4px;font-size: 16px;margin: 0;">Reversal o=
f cognitive impairment, a major non-motor PD symptom</p></li><li style=3D"m=
argin: 8px 0 0 32px;mso-special-format: bullet;"><p style=3D"color: rgb(54,=
55,55);line-height: 26px;margin-bottom: 0;box-sizing: border-box;padding-le=
ft: 4px;font-size: 16px;margin: 0;">Decreased hippocampal neuroinflammation=
</p></li><li style=3D"margin: 8px 0 0 32px;mso-special-format: bullet;"><p =
style=3D"color: rgb(54,55,55);line-height: 26px;margin-bottom: 0;box-sizing=
: border-box;padding-left: 4px;font-size: 16px;margin: 0;">Reduced dendriti=
c spine loss and synaptic damage</p></li><li style=3D"margin: 8px 0 0 32px;=
mso-special-format: bullet;"><p style=3D"color: rgb(54,55,55);line-height: =
26px;margin-bottom: 0;box-sizing: border-box;padding-left: 4px;font-size: 1=
6px;margin: 0;">Activation of the AKT/CREB/BDNF signaling pathway, critical=
 for neuroplasticity and synaptic health</p></li></ul><p style=3D"margin: 0=
 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">The PD r=
esearch is particularly interesting because dopaminergic neurons are extrao=
rdinarily mitochondria-dependent, and mitochondrial dysfunction is widely i=
mplicated as a driver of PD pathology.</p><h3 class=3D"header-anchor-post" =
style=3D"position: relative;font-family: 'SF Pro Display',-apple-system-hea=
dline,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetic=
a,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';f=
ont-weight: bold;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothin=
g: antialiased;-webkit-appearance: optimizelegibility;-moz-appearance: opti=
mizelegibility;appearance: optimizelegibility;margin: 1em 0 0.625em 0;color=
: rgb(54,55,55);line-height: 1.16em;font-size: 1.375em;">Stroke and multipl=
e sclerosis</h3><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-he=
ight: 26px;font-size: 16px;">Preclinical models of ischemic stroke and MS h=
ave shown neuroprotective effects of UA, primarily through anti-inflammator=
y and mitochondrial protection mechanisms.</p><h3 class=3D"header-anchor-po=
st" style=3D"position: relative;font-family: 'SF Pro Display',-apple-system=
-headline,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helv=
etica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbo=
l';font-weight: bold;-webkit-font-smoothing: antialiased;-moz-osx-font-smoo=
thing: antialiased;-webkit-appearance: optimizelegibility;-moz-appearance: =
optimizelegibility;appearance: optimizelegibility;margin: 1em 0 0.625em 0;c=
olor: rgb(54,55,55);line-height: 1.16em;font-size: 1.375em;">The important =
caveat</h3><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height:=
 26px;font-size: 16px;"><span>Almost all neurodegeneration data is preclini=
cal &#8212; cell and animal models. Human clinical trials in AD or PD speci=
fically haven&#8217;t been completed yet. The Alzheimer&#8217;s Drug Discov=
ery Foundation has noted that for neurodegeneration, UA may need to be star=
ted </span><em>early</em><span> &#8212; well before clinical disease onset =
&#8212; to provide meaningful protection.</span></p><p style=3D"margin: 0 0=
 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">This is co=
nsistent with a broader theme that runs through the whole longevity field:<=
/p><blockquote style=3D"border-left: 4px solid #FF6719;margin: 20px 0;paddi=
ng: 0;"><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);margin-left: 20=
px;line-height: 26px;font-size: 16px;">Mitophagy interventions probably wor=
k better as long-term resilience tools than as late-stage rescue therapies.=
</p></blockquote><h2 class=3D"header-anchor-post" style=3D"position: relati=
ve;font-family: 'SF Pro Display',-apple-system-headline,system-ui,-apple-sy=
stem,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple=
 Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-weight: bold;-webkit-=
font-smoothing: antialiased;-moz-osx-font-smoothing: antialiased;-webkit-ap=
pearance: optimizelegibility;-moz-appearance: optimizelegibility;appearance=
: optimizelegibility;margin: 1em 0 0.625em 0;color: rgb(54,55,55);line-heig=
ht: 1.16em;font-size: 1.625em;">What the Human Data Actually Shows</h2><p s=
tyle=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size=
: 16px;">This is where UA separates itself from a lot of &#8220;promising&#=
8221; compounds. We have actual placebo-controlled human trials.</p><p styl=
e=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 1=
6px;"><strong>Phase 1 safety trial (Ryu et al., 2019).</strong><span> Teste=
d in healthy elderly adults at 250&#8211;2000 mg single doses and 250/500/1=
000 mg/day for 28 days. Favorable safety profile at all doses. Bioavailable=
 in plasma at all doses. Modulated mitochondrial gene expression in muscle =
biopsies at 500 and 1000 mg.</span></p><p style=3D"margin: 0 0 20px 0;color=
: rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong>Phase 2 in midd=
le-aged adults (Singh et al., 2022, </strong><em><strong>Cell Reports Medic=
ine</strong></em><strong> &#8212; the ATLAS trial).</strong><span> 88 seden=
tary middle-aged adults, 4 months of supplementation, 500 mg or 1000 mg dai=
ly. Results: roughly 12% improvement in leg muscle strength, clinically mea=
ningful improvements in VO2 peak and 6-minute walk test at 1000 mg, reduced=
 plasma acylcarnitines (better mitochondrial fuel efficiency), reduced CRP =
(lower inflammation), and increased mitophagy and mitochondrial proteins in=
 muscle biopsies.</span></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55=
,55);line-height: 26px;font-size: 16px;"><strong>2025 cardiovascular trial =
(</strong><em><strong>iScience</strong></em><strong>).</strong><span> UA im=
proved cardiovascular biomarkers in humans. Preclinical models showed rever=
sal of systolic and diastolic dysfunction in aging hearts and heart failure=
 models.</span></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line=
-height: 26px;font-size: 16px;"><strong>2025 immune function trial (</stron=
g><em><strong>Nature Aging</strong></em><strong>).</strong><span> 50 health=
y adults, 1000 mg/day for 4 weeks. Improved markers of immune fitness.</spa=
n></p><h3 class=3D"header-anchor-post" style=3D"position: relative;font-fam=
ily: 'SF Pro Display',-apple-system-headline,system-ui,-apple-system,BlinkM=
acSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple Color Emoj=
i','Segoe UI Emoji','Segoe UI Symbol';font-weight: bold;-webkit-font-smooth=
ing: antialiased;-moz-osx-font-smoothing: antialiased;-webkit-appearance: o=
ptimizelegibility;-moz-appearance: optimizelegibility;appearance: optimizel=
egibility;margin: 1em 0 0.625em 0;color: rgb(54,55,55);line-height: 1.16em;=
font-size: 1.375em;">Dosing patterns from the literature</h3><p style=3D"ma=
rgin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">5=
00 mg/day shows benefit but consistently less than 1000 mg. 1000 mg/day is =
the dose used in most positive trials and appears to be the evidence-suppor=
ted dose. Timing: morning, with or without food &#8212; absorption isn&#821=
7;t significantly affected by food. Time to effect: gene expression changes=
 appear within 4 weeks; functional improvements typically reported at 2&#82=
11;4 months.</p><h2 class=3D"header-anchor-post" style=3D"position: relativ=
e;font-family: 'SF Pro Display',-apple-system-headline,system-ui,-apple-sys=
tem,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple =
Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-weight: bold;-webkit-f=
ont-smoothing: antialiased;-moz-osx-font-smoothing: antialiased;-webkit-app=
earance: optimizelegibility;-moz-appearance: optimizelegibility;appearance:=
 optimizelegibility;margin: 1em 0 0.625em 0;color: rgb(54,55,55);line-heigh=
t: 1.16em;font-size: 1.625em;">Why I Think UA Is Underrated</h2><p style=3D=
"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;=
">Here&#8217;s my honest take after digging through this.</p><p style=3D"ma=
rgin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><=
strong>It targets mitophagy directly.</strong><span> Almost no other oral c=
ompound does this reliably in humans. Mitophagy decline is one of the most =
fundamental drivers of aging.</span></p><p style=3D"margin: 0 0 20px 0;colo=
r: rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong>It&#8217;s a p=
ostbiotic, not a synthetic drug.</strong><span> Your gut already makes it, =
sometimes. The body already has machinery to handle it. The safety profile =
across trials reflects this.</span></p><p style=3D"margin: 0 0 20px 0;color=
: rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong>The mechanisms =
are convergent.</strong><span> Mitochondrial quality, inflammation, senesce=
nce, neuroprotection, muscle function, cardiovascular function, immune func=
tion &#8212; these aren&#8217;t separate problems. They&#8217;re all downst=
ream of mitochondrial decline. A compound that addresses the upstream cause=
 has multi-system effects.</span></p><p style=3D"margin: 0 0 20px 0;color: =
rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong>The human data is=
 real.</strong><span> This isn&#8217;t a &#8220;rodents only&#8221; story. =
We have multiple placebo-controlled human trials with measured outcomes in =
muscle biopsies, plasma biomarkers, and functional performance.</span></p><=
p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-s=
ize: 16px;"><strong>It pairs logically with other interventions.</strong><s=
pan> It doesn&#8217;t compete with peptides, exercise, or other longevity t=
ools. It addresses a different layer of the cellular machinery.</span></p><=
p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-s=
ize: 16px;">What I think holds it back from broader awareness: it&#8217;s n=
ot flashy or new, no instant subjective effect like a stimulant or peptide =
cycle. Effects are slow and structural, measured in weeks to months. Market=
ing has been dominated by one premium-priced commercial brand, which has sh=
aped the conversation. And it doesn&#8217;t fit cleanly into the peptide na=
rrative, so peptide-focused communities (mine included) sometimes overlook =
it.</p><h2 class=3D"header-anchor-post" style=3D"position: relative;font-fa=
mily: 'SF Pro Display',-apple-system-headline,system-ui,-apple-system,Blink=
MacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple Color Emo=
ji','Segoe UI Emoji','Segoe UI Symbol';font-weight: bold;-webkit-font-smoot=
hing: antialiased;-moz-osx-font-smoothing: antialiased;-webkit-appearance: =
optimizelegibility;-moz-appearance: optimizelegibility;appearance: optimize=
legibility;margin: 1em 0 0.625em 0;color: rgb(54,55,55);line-height: 1.16em=
;font-size: 1.625em;">A Note on Product Quality</h2><p style=3D"margin: 0 0=
 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><span>One =
thing worth flagging if you&#8217;re researching this further: </span><stro=
ng>the supplement market for UA is a mess.</strong></p><p style=3D"margin: =
0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">A lot o=
f products labeled &#8220;Urolithin A&#8221; or &#8220;pomegranate complex&=
#8221; actually contain ellagitannin or ellagic acid blends &#8212; the pre=
cursors, not UA itself. Remember, ~60% of people can&#8217;t efficiently co=
nvert those precursors. So buying a &#8220;pomegranate extract&#8221; hopin=
g to get UA is essentially gambling on your microbiome.</p><p style=3D"marg=
in: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><sp=
an>When you check labels, you want to see </span><em>Urolithin A listed dir=
ectly as the active ingredient</em><span>, with a specified milligram amoun=
t &#8212; not a &#8220;proprietary blend&#8221; hiding the dose, and not ju=
st &#8220;ellagitannins&#8221; or &#8220;ellagic acid.&#8221;</span></p><p =
style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-siz=
e: 16px;"><span>The honest reality: every single published human clinical t=
rial on UA has used </span><strong>Mitopure</strong><span>, made by Amazent=
is and sold under the Timeline brand. It&#8217;s a patented form with great=
er than 98% purity. That&#8217;s not me selling it &#8212; that&#8217;s jus=
t what the literature shows. When researchers wanted to study UA in humans,=
 this is the form they used. Generic UA products may be perfectly fine, but=
 they don&#8217;t have direct clinical data behind them at specified doses.=
 Some are well-tested by third parties; others aren&#8217;t.</span></p><p s=
tyle=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size=
: 16px;"><span>If you want the version that matches the clinical trial lite=
rature exactly: </span><a href=3D"https://substack.com/redirect/9a51ffdc-86=
b0-4f1a-9561-68d4a578ee7e?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGM=
y3p768BWtuZifRB-Zs" style=3D"color: #ff6719;text-decoration: none;">Timelin=
e Mitopure on Amazon</a></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55=
,55);line-height: 26px;font-size: 16px;">If you go with a generic UA produc=
t, look for:</p><ul style=3D"margin-top: 0;padding: 0;"><li style=3D"margin=
: 8px 0 0 32px;mso-special-format: bullet;"><p style=3D"color: rgb(54,55,55=
);line-height: 26px;margin-bottom: 0;box-sizing: border-box;padding-left: 4=
px;font-size: 16px;margin: 0;">Urolithin A listed as the active ingredient =
(not &#8220;pomegranate extract&#8221; or &#8220;ellagitannin complex&#8221=
;)</p></li><li style=3D"margin: 8px 0 0 32px;mso-special-format: bullet;"><=
p style=3D"color: rgb(54,55,55);line-height: 26px;margin-bottom: 0;box-sizi=
ng: border-box;padding-left: 4px;font-size: 16px;margin: 0;">A specified mg=
 dose, 500 mg or 1000 mg per serving to match the trial doses</p></li><li s=
tyle=3D"margin: 8px 0 0 32px;mso-special-format: bullet;"><p style=3D"color=
: rgb(54,55,55);line-height: 26px;margin-bottom: 0;box-sizing: border-box;p=
adding-left: 4px;font-size: 16px;margin: 0;">Third-party testing or COA ava=
ilable</p></li><li style=3D"margin: 8px 0 0 32px;mso-special-format: bullet=
;"><p style=3D"color: rgb(54,55,55);line-height: 26px;margin-bottom: 0;box-=
sizing: border-box;padding-left: 4px;font-size: 16px;margin: 0;">A reputabl=
e brand with transparent sourcing</p></li></ul><p style=3D"margin: 0 0 20px=
 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><span>Either wa=
y &#8212; verify the label says </span><em>Urolithin A</em><span>, not a pr=
ecursor complex.</span></p><h2 class=3D"header-anchor-post" style=3D"positi=
on: relative;font-family: 'SF Pro Display',-apple-system-headline,system-ui=
,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-se=
rif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-weight: bol=
d;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: antialiased;=
-webkit-appearance: optimizelegibility;-moz-appearance: optimizelegibility;=
appearance: optimizelegibility;margin: 1em 0 0.625em 0;color: rgb(54,55,55)=
;line-height: 1.16em;font-size: 1.625em;">Things Worth Researching Further<=
/h2><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;f=
ont-size: 16px;">If you&#8217;re going down the rabbit hole, here&#8217;s w=
hat&#8217;s worth understanding more deeply.</p><p style=3D"margin: 0 0 20p=
x 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">Mitophagy biol=
ogy in general &#8212; PINK1/Parkin, BNIP3, NIX pathways. The hallmarks of =
aging (L&#243;pez-Ot&#237;n et al.) and where mitochondrial dysfunction sit=
s among them. Microbiome variability &#8212; why some people convert ellagi=
tannins to UA and others don&#8217;t. Synergy with NAD+ precursors, exercis=
e, and caloric restriction, all of which affect mitochondrial pathways. The=
 2025 Palikaras lab paper on calcium-dependent mitophagy and inter-organell=
ar communication &#8212; the most mechanistically sophisticated UA paper I&=
#8217;ve seen. And the question of long-term effects: most trials are 4 wee=
ks to 4 months. Lifespan-style data in humans doesn&#8217;t exist yet.</p><=
h2 class=3D"header-anchor-post" style=3D"position: relative;font-family: 'S=
F Pro Display',-apple-system-headline,system-ui,-apple-system,BlinkMacSyste=
mFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif,'Apple Color Emoji','Seg=
oe UI Emoji','Segoe UI Symbol';font-weight: bold;-webkit-font-smoothing: an=
tialiased;-moz-osx-font-smoothing: antialiased;-webkit-appearance: optimize=
legibility;-moz-appearance: optimizelegibility;appearance: optimizelegibili=
ty;margin: 1em 0 0.625em 0;color: rgb(54,55,55);line-height: 1.16em;font-si=
ze: 1.625em;">Final Thoughts</h2><p style=3D"margin: 0 0 20px 0;color: rgb(=
54,55,55);line-height: 26px;font-size: 16px;">UA is one of those compounds =
that doesn&#8217;t get talked about enough because it doesn&#8217;t have a =
sexy story. There&#8217;s no &#8220;you&#8217;ll feel it on day one.&#8221;=
 There&#8217;s no dramatic transformation photo. What there is, is a steadi=
ly growing body of evidence that it does something genuinely fundamental at=
 the cellular level &#8212; restoring a process that nearly every other lon=
gevity intervention is trying to influence indirectly.</p><p style=3D"margi=
n: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">If a=
ging is partly a story about damaged mitochondria piling up faster than you=
r cells can clear them, UA is one of the few tools that addresses that exac=
t problem head-on.</p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);l=
ine-height: 26px;font-size: 16px;">Whether that translates into long-term h=
uman longevity outcomes is a question the next decade of research will answ=
er. But the mechanisms, the human safety data, and the multi-system effects=
 already make it worth knowing about deeply &#8212; even if you never perso=
nally use it.</p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-h=
eight: 26px;font-size: 16px;"><em>This is for research and educational purp=
oses only. Nothing in this piece is medical advice, and this isn&#8217;t a =
recommendation to use UA personally. If you&#8217;re interested in the topi=
c for any non-research reason, that&#8217;s a conversation for a qualified =
medical professional who knows your situation.</em></p><p style=3D"margin: =
0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;">If this=
 was useful, share it with someone who&#8217;s been chasing the longevity r=
abbit hole and hasn&#8217;t come across UA yet &#8212; and let me know in t=
he comments what underrated compound you&#8217;d like me to break down next=
=2E</p><p style=3D"margin: 0 0 20px 0;co=
lor: rgb(54,55,55);line-height: 26px;=
font-size: 16px;">&#8212; Derek</p><div style=3D"font-size: 16px;line-heigh=
t: 26px;"><hr style=3D"margin: 32px 0;padding: 0;height: 1px;background: rg=
b(0,0,0,.1);border: none;"></div><h2 class=3D"header-anchor-post" style=3D"=
position: relative;font-family: 'SF Pro Display',-apple-system-headline,sys=
tem-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,s=
ans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-weigh=
t: bold;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: antial=
iased;-webkit-appearance: optimizelegibility;-moz-appearance: optimizelegib=
ility;appearance: optimizelegibility;margin: 1em 0 0.625em 0;color: rgb(54,=
55,55);line-height: 1.16em;font-size: 1.625em;">References</h2><p style=3D"=
margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"=
><strong>Foundational mitophagy research</strong></p><p style=3D"margin: 0 =
0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><span>Ryu=
 D, Mouchiroud L, Andreux PA, et al. </span><em>Urolithin A induces mitopha=
gy and prolongs lifespan in C. elegans and increases muscle function in rod=
ents.</em><span> Nature Medicine. 2016;22(8):879-888. </span><a href=3D"htt=
ps://substack.com/redirect/123266d7-f61c-49ee-9bc7-5d377a6b5129?j=3DeyJ1Ijo=
iNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs" style=3D"color: #=
ff6719;text-decoration: none;">doi:10.1038/nm.4132</a></p><p style=3D"margi=
n: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><str=
ong>Phase 1 human safety and bioavailability</strong></p><p style=3D"margin=
: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><span=
>Andreux PA, Blanco-Bose W, Ryu D, et al. </span><em>The mitophagy activato=
r urolithin A is safe and induces a molecular signature of improved mitocho=
ndrial and cellular health in humans.</em><span> Nature Metabolism. 2019;1(=
6):595-603. </span><a href=3D"https://substack.com/redirect/77a7a101-5fc6-4=
614-8917-4d826334ce9b?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p7=
68BWtuZifRB-Zs" style=3D"color: #ff6719;text-decoration: none;">Full text</=
a></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px=
;font-size: 16px;"><strong>Phase 2 muscle strength and exercise performance=
 trial (ATLAS)</strong></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,=
55);line-height: 26px;font-size: 16px;"><span>Singh A, D&#8217;Amico D, And=
reux PA, et al. </span><em>Urolithin A improves muscle strength, exercise p=
erformance, and biomarkers of mitochondrial health in a randomized trial in=
 middle-aged adults.</em><span> Cell Reports Medicine. 2022;3(5):100633. </=
span><a href=3D"https://substack.com/redirect/38ff84f5-6c7e-4b1c-8da7-f7cf0=
2576ee2?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs=
" style=3D"color: #ff6719;text-decoration: none;">Full text</a></p><p style=
=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16=
px;"><strong>2025 cardiovascular trial</strong></p><p style=3D"margin: 0 0 =
20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><span>Liu S=
, Faitg J, Tissot C, et al. </span><em>Urolithin A provides cardioprotectio=
n and mitochondrial quality enhancement preclinically and improves human ca=
rdiovascular health biomarkers.</em><span> iScience. 2025;28(2):111814. </s=
pan><a href=3D"https://substack.com/redirect/ea476dca-96a3-46fc-b75c-212710=
af7c34?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs"=
 style=3D"color: #ff6719;text-decoration: none;">Full text</a></p><p style=
=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16=
px;"><strong>2025 calcium-dependent mitophagy and inter-organellar mechanis=
m</strong></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-heig=
ht: 26px;font-size: 16px;"><span>Roussos A, Kitopoulou K, Borbolis F, et al=
=2E </span><em>Urolithin A modulates in=
ter-organellar communication via calci=
um-dependent mitophagy to promote healthy ageing.</em><span> Autophagy. 202=
5;21(12):3097-3122. </span><a href=3D"https://substack.com/redirect/3499a6e=
7-ad17-41a0-a941-019a91cfbe64?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0kr=
RXGMy3p768BWtuZifRB-Zs" style=3D"color: #ff6719;text-decoration: none;">Ful=
l text</a></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-heig=
ht: 26px;font-size: 16px;"><strong>Muscle aging mechanism review</strong></=
p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;fon=
t-size: 16px;"><span>Faitg J, D&#8217;Amico D, Rinsch C, Singh A. </span><e=
m>Mitophagy Activation by Urolithin A to Target Muscle Aging.</em><span> Ca=
lcified Tissue International. 2024;114(1):53-59. </span><a href=3D"https://=
substack.com/redirect/29fc570e-38cd-48c1-a27e-5facec5bcd12?j=3DeyJ1IjoiNGl3=
b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs" style=3D"color: #ff671=
9;text-decoration: none;">Full text</a></p><p style=3D"margin: 0 0 20px 0;c=
olor: rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong>Sports nutr=
ition applications</strong></p><p style=3D"margin: 0 0 20px 0;color: rgb(54=
,55,55);line-height: 26px;font-size: 16px;"><em>Emerging evidence of Urolit=
hin A in sports nutrition: bridging preclinical findings to athletic applic=
ations.</em><span> Frontiers in Nutrition. 2025;12:1585922. </span><a href=
=3D"https://substack.com/redirect/05952cf0-46bd-4349-a898-ec7274d6c49e?j=3D=
eyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs" style=3D"c=
olor: #ff6719;text-decoration: none;">Full text</a></p><p style=3D"margin: =
0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong=
>Alzheimer&#8217;s disease (preclinical)</strong></p><p style=3D"margin: 0 =
0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><span>Jay=
atunga DPW, Hone E, Khaira H, et al. </span><em>Therapeutic Potential of Mi=
tophagy-Inducing Microflora Metabolite, Urolithin A for Alzheimer&#8217;s D=
isease.</em><span> Nutrients. 2021;13(11):3744. </span><a href=3D"https://s=
ubstack.com/redirect/df689249-4bcc-4b86-b773-22b76169a0b0?j=3DeyJ1IjoiNGl3b=
2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs" style=3D"color: #ff6719=
;text-decoration: none;">Full text</a></p><p style=3D"margin: 0 0 20px 0;co=
lor: rgb(54,55,55);line-height: 26px;font-size: 16px;"><em>Urolithin A impr=
oves Alzheimer&#8217;s disease cognition and restores mitophagy and lysosom=
al functions.</em><span> bioRxiv. 2024. </span><a href=3D"https://substack.=
com/redirect/c01ee62d-a5a3-4ecf-b5cb-c9808da9e647?j=3DeyJ1IjoiNGl3b2U2In0.s=
VDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs" style=3D"color: #ff6719;text-de=
coration: none;">Preprint</a></p><p style=3D"margin: 0 0 20px 0;color: rgb(=
54,55,55);line-height: 26px;font-size: 16px;"><strong>Parkinson&#8217;s dis=
ease (preclinical)</strong></p><p style=3D"margin: 0 0 20px 0;color: rgb(54=
,55,55);line-height: 26px;font-size: 16px;"><em>Urolithin A in Health and D=
iseases: Prospects for Parkinson&#8217;s Disease Management.</em><span> Ant=
ioxidants. 2023;12(7):1479. </span><a href=3D"https://substack.com/redirect=
/73066fc3-d988-493e-b431-ffe2bd11b7e7?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8k=
fdamY0krRXGMy3p768BWtuZifRB-Zs" style=3D"color: #ff6719;text-decoration: no=
ne;">Full text</a></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);l=
ine-height: 26px;font-size: 16px;"><em>Urolithin A improves Parkinson&#8217=
;s disease-associated cognitive impairment through modulation of neuroinfla=
mmation and neuroplasticity.</em><span> Experimental Neurology. 2025. </spa=
n><a href=3D"https://substack.com/redirect/8e8387e2-d400-450f-b322-eaac0385=
504d?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs" s=
tyle=3D"color: #ff6719;text-decoration: none;">PubMed</a></p><p style=3D"ma=
rgin: 0 0 20px 0;color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><=
strong>Comprehensive CNS review</strong></p><p style=3D"margin: 0 0 20px 0;=
color: rgb(54,55,55);line-height: 26px;font-size: 16px;"><em>Urolithin A in=
 Central Nervous System Disorders: Therapeutic Applications and Challenges.=
</em><span> Biomedicines. 2025;13(7):1553. </span><a href=3D"https://substa=
ck.com/redirect/2e1d546d-6551-4992-b6ac-87f2c20b044b?j=3DeyJ1IjoiNGl3b2U2In=
0.sVDxRtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs" style=3D"color: #ff6719;text=
-decoration: none;">Full text</a></p><p style=3D"margin: 0 0 20px 0;color: =
rgb(54,55,55);line-height: 26px;font-size: 16px;"><strong>Heart failure (HF=
pEF)</strong></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);line-h=
eight: 26px;font-size: 16px;"><em>Urolithin A Restores Mitochondrial Functi=
on and Reverses Cardiac Remodeling in Heart Failure with Preserved Ejection=
 Fraction.</em><span> bioRxiv. 2025. </span><a href=3D"https://substack.com=
/redirect/08b19280-c64c-4a6e-bb10-2ac4d5272df6?j=3DeyJ1IjoiNGl3b2U2In0.sVDx=
RtmZ85v8kfdamY0krRXGMy3p768BWtuZifRB-Zs" style=3D"color: #ff6719;text-decor=
ation: none;">Preprint</a></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,=
55,55);line-height: 26px;font-size: 16px;"><strong>Independent supplement a=
ssessment</strong></p><p style=3D"margin: 0 0 20px 0;color: rgb(54,55,55);l=
ine-height: 26px;font-size: 16px;"><a href=3D"https://substack.com/redirect=
/a94e0897-1f8a-4f87-9f8b-37aa797b8427?j=3DeyJ1IjoiNGl3b2U2In0.sVDxRtmZ85v8k=
fdamY0krRXGMy3p768BWtuZifRB-Zs" style=3D"color: #ff6719;text-decoration: no=
ne;">Alzheimer&#8217;s Drug Discovery Foundation Cognitive Vitality Report =
&#8212; Urolithin A</a></p><div class=3D"subscribe-widget is-signed-up" dat=
a-component-name=3D"SubscribeWidget" style=3D"margin: 0 0 1em;direction: lt=
r;font-size: 16px;line-height: 26px;margin-bottom: 0;"><div class=3D"pencra=
ft pc-reset button-wrapper" style=3D"text-decoration: unset;list-style: non=
e;font-size: 16px;line-height: 26px;text-align: center;cursor: pointer;bord=
er-radius: 4px;"><a class=3D"button subscribe-btn primary" href=3D"https://=
substack.com/redirect/2/eyJlIjoiaHR0cHM6Ly9kZXJla3BydXNraS5zdWJzdGFjay5jb20=
vc3Vic2NyaWJlP3V0bV9zb3VyY2U9cG9zdCZ1dG1fY2FtcGFpZ249ZW1haWwtY2hlY2tvdXQmbm=
V4dD1odHRwcyUzQSUyRiUyRmRlcmVrcHJ1c2tpLnN1YnN0YWNrLmNvbSUyRnAlMkZ1cm9saXRoa=
W4tYS10aGUtbW9zdC11bmRlcnJhdGVkLWNvbXBvdW5kJnI9NGl3b2U2JnRva2VuPWV5SjFjMlZ5=
WDJsa0lqb3lOek0yTWpJek9UZ3NJbWxoZENJNk1UYzNOemN6TlRBek1Dd2laWGh3SWpveE56Z3d=
NekkzTURNd0xDSnBjM01pT2lKd2RXSXRNek0yTlRNMk55SXNJbk4xWWlJNkltTm9aV05yYjNWME=
luMC5oTTYzTkZnOEZzRHI4Y1RjME11aUtsdHVJdFc1WWhfanVrYWthMUVWaTVZIiwicCI6MTk2M=
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MCwiZXhwIjoyMDkzMzExMDMwLCJpc3MiOiJwdWItMCIsInN1YiI6ImxpbmstcmVkaXJlY3QifQ.=
wFNztJ1v9MtdZ4aKq9R5o7iyn9ql94WK2yCbr9CiycQ?&utm_medium=3Demail&utm_source=
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