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The Longevity Nutrient

The Unexpected Fat That Holds the Key to Healthy Aging

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About The Book

Unlock the secret to longevity with Dr. Stephanie Venn-Watson’s groundbreaking research of the molecule C15:0—an essential fat found in whole milk, cheese, and fatty fish—that can improve your health and increase your lifespan.

The hunt for the holy grail of healthy aging has been ongoing for hundreds of years, and Dr. Stephanie Venn-Watson may be its most unlikely champion. As a veterinary epidemiologist, she was recruited by the US Navy to lead a clinical research program to improve the health of Navy dolphins. Using advanced biotechnology to study the healthiest aging dolphins, she discovered C15:0, a saturated fat which has the potential to expand both the health-span and lifespan in long-lived mammals.

In The Longevity Nutrient, Dr. Venn-Watson unveils the science behind C15:0, the first essential fatty acid to be discovered in nearly a hundred years. This revolutionary discovery identifies the crucial ingredient for combating chronic aging-associated diseases. This book unfolds like a detective story, bringing you along through the science and discovery of this extraordinary nutrient. The implications of adding this nutrient back into the American diet could not be more significant. Mounting scientific evidence supports that C15:0 can:

-Reduce the risk of and reverse fatty liver disease
-Reduce the risk of and reverse type 2 diabetes and heart disease
-Meaningfully slow the effects of aging to improve overall well-being

Perhaps the most surprising discovery? In the end, it may just be the saturated fat that saves us all.

In this book, Dr. Venn-Watson tells the extraordinary story of this discovery and examines the paradigm shifting implications for human health and aging. She presents the easy, practical steps for you to responsibly bring this essential C15:0 fat into your life to improve your long-term health and wellness.

About The Author

Photography by Justin Chung

Dr. Stephanie Venn-Watson is a veterinary epidemiologist with over eighty peer-reviewed scientific publications and seventy patents. Stephanie discovered the health benefits of C15:0 while working for the US Navy to continually improve the long-term health of Navy bottlenose dolphins. While seeking to understand why some dolphins were aging at slower rates than others, Stephanie applied an advanced technology called metabolomics on archived dolphin serum to discover which molecules predicted the healthiest aging dolphins. Here, she discovered C15:0 as a healthy saturated fatty acid. Upon completing eight key studies over three years, she presented C15:0 as the first essential fatty acid to be found in over ninety years. Her unique One Health approach to discovering novel ways to improve both human and animal health has been featured on NPR’s Science Friday, The New York Times, Inverse, the BBC, National Geographic, and more.

Product Details

  • Publisher: S&S/Simon Element (March 25, 2025)
  • Length: 352 pages
  • ISBN13: 9781668063569

Raves and Reviews

“Dr. Stephanie Venn-Watson has made a groundbreaking, once-in-a-century discovery that changes how we can age for the better, at all stages of life. While improving the health of older dolphins, she unexpectedly discovered the crucial ingredient we all need to slow aging and fight chronic aging-associated diseases. The Longevity Nutrient tells the rest of the story. The book entertains as it enlightens, with impressively robust science that has positively affected my own life, and I guarantee you won’t look at saturated fat the same way again.” —Mark Hyman, MD, cofounder and chief medical officer of Function Health, host of The Doctor’s Farmacy podcast, and fifteen-time New York Times bestselling author of Young Forever

The Longevity Nutrient is an accessible discussion of the latest breakthroughs in the burgeoning field of longevity. Readers will be provided with a clear understanding of the basic biological processes that must be addressed to improve longevity. Exhaustively referenced, the book identifies the incredible power behind C15:0, a newly identified fatty acid that fights the destructive influence of cell membrane oxidation leading to Cellular Fragility Syndrome. The importance of this book to each and every person cannot be overstated.” —Drew Pinsky, MD

“Dr. Venn-Watson has opened my eyes to the nutritional deficiencies that we face as humans today. Her ability to share the truth about what our nutrition lacks, to extrapolate data from some of the largest populations of centenarians, and to help humans live happier, longer, and healthier lives is second to none. I can’t unlearn what I’ve learned from her and her research on C15:0. Life-changing.” —Thomas DeLauer

“C15:0 is a startling new discovery that taps into so many ways to extend longevity. It does what all the big-gun longevity molecules do, from activating AMPK to inhibiting mTOR. It also targets six hallmarks of aging. Read this book to see why C15:0 might be bigger than NAD and how to use it to become younger.” —Dave Asprey, four-time New York Times bestselling author and father of biohacking

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