In this episode of The Human Upgrade, Dave Asprey sits down with veterinary epidemiologist Stephanie Venn-Watson to uncover a newly discovered essential fatty acid that could be the key to longevity. Originally found in Navy dolphins that were outliving their wild counterparts by decades, C15 is now proving to enhance cellular resilience, metabolic health, and even lifespan. But here’s the catch—modern nutrition guidelines have nearly eliminated it from our diets. Dave and Stephanie dive into the groundbreaking science behind this lost nutrient, why its removal may be accelerating aging, and whether supplementing it could be the next big biohack.
For nearly a century, scientists believed we had discovered ALL of the essential fatty acids the human body needs. But what if they were wrong?
Stephanie Venn-Watson, a veterinary epidemiologist and longevity researcher, joins Dave to reveal a groundbreaking discovery—a newly identified essential fatty acid, C15, that may hold the key to healthier aging and even longer lifespans. Originally uncovered in an unlikely place—U.S. Navy dolphins that were outliving their wild counterparts by decades—this forgotten fat is now shaking up the scientific community.
So why hasn’t anyone told you about it? Decades of misguided dietary advice stripped this crucial nutrient from our food system, leaving an entire generation unknowingly deficient. Pregnant women have been some of the MOST hurt from this cruel change to our modern diet. Now, cutting-edge research is proving that C15 plays a critical role in cellular stability, mitochondrial function, and even mental health.
What You’ll Learn in This Episode:
** Get 15$ off Fatty15 at www.fatty15.com with code: DAVE **
SPONSORS
-STEMREGEN | Head to https://www.stemregen.co/dave for 20% off your first order.
-LMNT | Free LMNT Sample Pack with any drink mix purchase by going to https://drinklmnt.com/DAVE.
00:00 – Intro
Dave introduces the episode’s focus on C15, a newly identified essential fatty acid linked to longevity and metabolic health.
00:34 – Meet Dr. Stephanie Venn-Watson
Stephanie shares her background as a veterinary epidemiologist and the research that led to discovering C15.
00:46 – Discovering C15 in Navy Dolphins
How Navy dolphins outliving their wild counterparts led to the breakthrough identification of C15 deficiency in humans.
01:58 – Challenges and Skepticism
The scientific pushback and skepticism around calling C15 an essential fatty acid—and how research is proving its necessity.
04:21 – Scientific Validation and Research
Independent studies confirm C15’s role in reversing cellular aging, optimizing metabolism, and improving longevity.
06:59 – C15’s Impact on Human Health
The link between C15 deficiency and heart disease, type 2 diabetes, cognitive decline, and ferroptosis—and why most people aren’t getting enough.
27:43 – Big Data, AI, and Longevity Research
How big data and AI-driven longevity research helped uncover C15’s effects on cellular stability and aging.
36:08 – C15 as a Longevity Nutrient
Why C15 is being called the next major longevity breakthrough, outperforming some top longevity drugs in early studies.
42:14 – The Navy’s Role in Fatty 15
The U.S. Navy’s involvement in funding and supporting the research that led to Fatty 15.
43:03 – Epigenetic Aging and Lifespan
How C15 influences epigenetic markers, slows aging, and may contribute to lifespan extension.
44:51 – Nutritional Guidelines and C15 Deficiency
Decades of misguided dietary advice removed C15 from the modern diet—leading to widespread fatty acid deficiency.
50:41 – Mental Health and Endocannabinoids
New findings on C15’s role in mental health, including its ability to act as an endocannabinoid for mood and resilience.
51:33 – Dairy, Fats, and Nutrition History
The difference between grass-fed vs. grain-fed dairy, the misunderstood role of saturated fats, and omega-3 benefits.
56:38 – Fatty 15 in Skincare and Supplements
How C15’s properties could make it the next breakthrough ingredient in skincare and longevity supplements.
01:03:58 – Regulatory Changes in Nutrition
Why outdated nutritional guidelines still demonize certain fats—and how C15 research could change that.
01:11:26 – Gender Differences in Fatty Acids
How C15 metabolism and storage may differ between men and women, and what it means for supplementation.
Resources:
“Follow” or “subscribe” to The Human Upgrade™ with Dave Asprey on your favorite podcast platform.
Go to Apple Podcasts at daveasprey.com/apple and leave a (hopefully) 5-star rating and a creative review.
Got a comment, idea or question for the podcast? Submit via this form!
Follow @thehumanupgradepodcast on Instagram and Facebook.
Learn directly from Dave Asprey alongside others in a membership group: ourupgradecollective.com.
Smarter Not Harder: The Biohacker’s Guide to Getting the Body and Mind You Want is about helping you to become the best version of yourself by embracing laziness while increasing your energy and optimizing your biology.
Subscribe to become an “Insider”, and receive weekly biohacking tips and tech directly from Dave to start hacking your way to stronger mental performance and physical results.
Receive weekly biohacking tips and tech by becoming a Dave Asprey insider.