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The Longevity Nutrient

The Unexpected Fat That Holds the Key to Healthy Aging

By: Stephanie Venn-Watson

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Paperback | 23 April 2026

At a Glance

Paperback
352 Pages

Dimensions(cm)
21.27 x 13.97 x 2.03

Paperback

RRP $34.99

$30.75

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Unlock the secret to longevity with Dr. Stephanie Venn-Watson’s “groundbreaking, once-in-a-century discovery” (Mark Hyman, MD, New York Times bestselling author) 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 continually 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 “life-changing” (Thomas DeLauer, author of Intermittent Fasting Made Easy) 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.

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