This nutrient may ‘reverse’ signs of aging and the reviews have us intrigued
C15:0, an odd-chain saturated fatty acid also known as pentadecanoic acid, has gained attention for its potential to counteract signs of aging, based on research initially inspired by observations of long-lived dolphins in the U.S. Navy’s Marine Mammal Program. The supplement Fatty15, which contains 100 milligrams of pure C15:0, is marketed as a daily capsule with reported benefits including improved energy, sleep, joint health, and biological age reduction. While some users report significant improvements and the product is backed by numerous studies and expert endorsements, it is sold at a premium price and relies on customer testimonials alongside scientific claims.
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Shopping This nutrient may ‘reverse’ signs of aging and the reviews have us intrigued By Miska Salemann Published April 30, 2026, 9:30 a.m. ET Fatty 15/ New York Post Composite New York Post may be compensated and/or receive an affiliate commission if you click or buy through our links. Featured pricing is subject to change. Not all heroes wear capes — some have flippers. Or, at least, such was the case when researchers began observing dolphins in the U.S. Navy’s Marine Mammal Program, and found that the healthiest, longest-living dolphins had higher levels of a key nutrient now known as C15:0.
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