The Longevity Nutrient in Fatty15 Gains Three Big Wins Across Heart, Metabolic, and Cognitive Health

Back-to-back peer-reviewed studies, including one in Nature, strengthen the momentum behind fatty15 (C15:0) as a healthy aging and longevity supplement

SAN DIEGO, Nov. 12, 2026 /PRNewswire/ -- A string of recent studies is solidifying fatty15 (containing pure C15:0) as a leading longevity supplement with broad mechanisms targeting long-term cardiovascular, metabolic, and cognitive health. The culmination of 150+ studies is supporting fatty15 as a geroprotector.

What Are Geoprotectors?

The growing list of published broad mechanisms and benefits of the pure and patented C15:0 ingredient in fatty15 - including the latest studies related to cardiovascular, metabolic, gut, and cognitive health —  is strengthening its role as a highly coveted geroprotector. Geroprotectors are molecules that can slow the onset of aging-related comorbidities, resulting in clinically relevant benefits that support longer and healthier lives. For this reason, geroprotectors are considered the holy grail of healthy aging and longevity.

What Do New Studies Say About Fatty15?

The first study published in Nature reconfirmed that pure C15:0 (pentadecanoic acid) supplementation supported healthy LDL cholesterol (LDL-C) and vascular health. This benefit, demonstrated in a relevant mouse model, was attributed to C15:0's ability to both lower liver production of LDL-C and increase removal of LDL-C from circulation. Further, the team found that C15:0 was a natural HMG-CoA reductase inhibitor, the same functional mechanism used by statins to support cholesterol health.

Clinical trials in humans support these most recent findings. A randomized, 12-week clinical trial demonstrated that daily supplementation with pure C15:0 lowered LDL-C and improved the gut microbiome.

Another cross-over clinical trial showed that increased dietary and circulating C15:0 levels were associated with improved vascular function. These studies are further supported by prospective human cohort meta-analyses tracking large populations of humans over long periods of time, which have repeatedly shown that people with higher C15:0 levels have better protected long-term cardiovascular health.

The second new study showed that pure C15:0 supported healthy gut function in mice by activating GPR40. GPR40 is a receptor primarily present in the gut, pancreas, and brain. When activated, studies have shown that GPR40 signals the release of GLP-1, supports glucose-dependent insulin secretion, and serves as a neuroprotectant.

Prior studies have shown that pure C15:0 supplementation supports healthy metabolism in preclinical models and activates AMPK, the same functional mechanism used by metformin to support glucose control.

Similar to the cardiovascular story, numerous prospective cohort meta-analyses following large populations over long periods of time have consistently shown that people with higher C15:0 levels have better protected long-term metabolic health. The most recent metaanalysis showed that every 0.1% increase in C15:0 levels was associated with 32% better-protected long-term metabolic health in humans.

Finally, the third new study focused on the potential for pure C15:0 as a neuroprotectant. Here, they showed in cell-based studies that pure C15:0 prevented amyloid-β (Aβ) from aggregating, as well as breaking up Aβ groups.

This same effect, along with improved locomotor function, was also demonstrated in C.elegans. Previous studies have shown that C15:0 is an MAO-B and FAAH inhibitor, two established mechanisms to support long-term cognitive health, alongside mood and sleep. While these studies are early, a human population cohort study showed that, among people with type 2 diabetes, higher C15:0 levels were associated with better overall cognitive and memory scores.

How Do These New Studies Relate to Each Other?

Interestingly, all three newly published studies used untargeted screening of a large variety of small molecules to sleuth how certain gut microbes or medicinal herbs supported health benefits across cardiovascular, metabolic, gut, and cognitive health.

The Nature study sought to answer why higher abundance of Bacteroides, a good-gut microbe, has been repeatedly associated with better long-term cardiovascular health in humans. The GPR40 study wanted to find out how an ancient root called P. cyrtonema demonstrated multiple benefits, including glucose health, in preclinical models.

The Aβ study investigated how an herbal mix (called Jowiseungchungtang, or JWS) had been shown in clinical trials to support cognitive health. In these studies, direct cardiovascular, metabolic, and cognitive health benefits of Bacteroides, P. cyrtonema, and JWS were narrowed down to pure C15:0.

"These latest studies help to fortify fatty15's core role as a geroprotector supporting healthy aging and longevity," said Dr. Stephanie Venn-Watson, co-Founder and co-CEO of Seraphina Therapeutics. "It has been exciting and inspiring to see the global research community publish their own independent studies on C15:0, which are reconfirming what dolphins taught us over a decade ago."

Do Other Studies Support Fatty15's Potential Benefits?

To date, over 150 peer-reviewed studies, including dose-dependent mechanism of action studies, cell-based and in vivo efficacy studies, prospective cohort meta-analyses tracking large human populations over extended periods of time, and clinical trials — many of which used the pure C15:0 ingredient in fatty15 — support fatty15 as a foundational healthy aging and longevity supplement. This science is landing at an impressive pace; for the past two years, an average of one new C15:0 study has been published per week in the scientific peer-reviewed literature.

Dr. Venn-Watson's groundbreaking research around C15:0, as well as the rapidly growing peer-reviewed C15:0 science from the independent, global academic community, is the topic of her TEDx talk and the USA Today Bestselling book, The Longevity Nutrient, published by Simon & Schuster. For her discoveries of C15:0's health benefits and development of fatty15 to meaningfully improve global health, Dr. Venn-Watson has been recognized as a CNBC Changemaker (2025) and L.A. Times Life Sciences Visionary (2026).

You can learn more about fatty15 on its website here.

About Seraphina Therapeutics, Inc.: Seraphina Therapeutics is a health and wellness company that brought the award-winning healthy aging supplement fatty15 to market. Developed by doctors funded by the U.S. Navy, fatty15 contains a pure, patented, and bioavailable nutrient called C15:0 (pentadecanoic acid). Fatty15 is backed by 150+ peer-reviewed studies, 60+ patents and 30+ awards supporting C15:0's role as a foundational nutrient that strengthens cells against age-related breakdown.

Media Contact:
Fatty15 Press Office
1 619-407-9225
[email protected]
https://www.fatty15.com

SOURCE Seraphina Therapeutics