Did the United States Navy discover the “fountain of youth”… by accident?

It’s hard to believe, but it’s true…

Think of all the drugs we take… diets we follow… even all of those new “bio-hacking” trends… just to squeeze out a few extra years of life.

But the U.S. Navy did a lot more than that…

You see, a program that launched 60 years ago was designed to help the Navy better detect sea mines. But out of that research came a remarkable discovery…

A simple compound that actually DOUBLED the lifespans of animals…

Now the science is being tested and confirmed in humans – and this compound could hold the secret to adding decades to your life.

But here’s the problem – you’ve probably been told to stay away from it.

Back in the 1960s, the U.S. Navy started working with bottlenose dolphins, training them in mine detection and underwater recovery.

This was the height of the Cold War, so, understandably, a lot of that work was happening in secret.

But the Navy noticed something strange…

The dolphins in their care weren’t just living a little longer than wild dolphins…

They were living TWICE as long.

Same species. Same ocean water.

But there WAS one difference: the type of fish they were eating.

Navy dolphins were fed nutrient-rich, fatty fish—the kind wild dolphins might only catch occasionally. And those fish were loaded with something most people don’t know exists in seafood: C15:0pentadecanoic acid.

When researchers started testing this molecule in humans, they found the exact same pattern…

People with high levels lived SIGNIFICANTLY longer…

People with low levels aged faster, got sicker earlier, and died sooner….

C15:0 is an odd-chain saturated fatty acid found in animal fats—especially fatty fish and whole-fat dairy products. For dolphins, the source was fish. For humans? Traditionally, we get it from butter, whole milk, full-fat cheese, and real yogurt.

But here’s the thing… that’s everything the low-fat guidelines of the 1980s told you to eliminate from your diet!

And when Americans followed those guidelines—replacing butter with margarine, whole milk with skim—we created a nationwide C15:0 deficiency.

Meanwhile, the Navy dolphins never went low-fat. And as a result, they lived twice as long.

Here’s what researchers found when they started studying C15:0 in humans:

A 16-year study following over 4,000 people (median age 60) found a clear relationship:

  • Higher C15:0 levels = lower cardiovascular disease
  • Higher C15:0 levels = lower all-cause mortality

So, the more C15:0 in your blood, the longer you lived.

When researchers looked at Italian centenarians living in longevity zones, they found those over 60 had 121% higher C15:0 levels than elderly people in low-longevity areas!

C15:0 activates your body’s cellular energy systems and slows down the aging pathways in your cells—the same mechanisms scientists target with expensive longevity drugs.

Your body can’t make C15:0 on its own. You have to get it from food. And C15:0 naturally declines as you age—which means older adults need it even more.

But if you’ve been following low-fat guidelines for the past 40 years, your levels are almost certainly deficient.

Now, you know to restore what’s been missing.

Pure C15:0 is available as a pharmaceutical-grade supplement. The most studied brand is Fatty15, which provides 100mg of pentadecanoic acid per capsule.

That’s roughly equivalent to the amount found in traditional whole-fat dairy diets—without requiring you to consume large amounts of other fats.

A month’s supply should set you back about $40 per month.

To living longer – and better,

Ray Thatcher
Research Director, Health Sciences Institute

Sources:

  • Venn-Watson, S., Reiner, J., Jensen, E. D., & Schork, N. J. (2024). Circulating pentadecanoic acid levels in the Longevity Consortium reveal links with healthy aging and centenarian status. Metabolites, 14(7), 355. https://www.mdpi.com/2218-1989/14/7/355
  • Trieu, K., Bhat, S., Dai, Z., Leander, K., Gigante, B., Qian, F., Ardisson Korat, A. V., Sun, Q., Pan, X.-F., Laguzzi, F., Cederholm, T., de Faire, U., Hellénius, M.-L., Wu, J. H. Y., Risérus, U., & Marklund, M. (2021). Biomarkers of dairy fat intake, incident cardiovascular disease, and all-cause mortality: A cohort study, systematic review, and meta-analysis. PLoS Medicine, 18(9), e1003763. https://doi.org/10.1371/journal.pmed.1003763
  • Venn-Watson, S., & Schork, N. J. (2023). Pentadecanoic acid (C15:0), an essential fatty acid, shares clinically relevant cell-based activities with leading longevity-enhancing compounds. Nutrients, 15(21), 4607. https://pmc.ncbi.nlm.nih.gov/articles/PMC10649853/
  • Venn-Watson, S., & Butterworth, C. N. (2022). Broader and safer clinically-relevant activities of pentadecanoic acid compared to omega-3: Evaluation of an emerging essential fatty acid across twelve primary human cell-based disease systems. PLoS ONE, 17(6), e0268778. https://doi.org/10.1371/journal.pone.0268778
  • Jenkins, B., Seyssel, K., Chiu, S., Pan, P.-H., Lin, S.-Y., Stanley, E., Ament, Z., West, J. A., Summerhill, K., Griffin, J. L., Vetter, W., Autio, K. J., Hiltunen, K., Hazebrouck, S., Stepankova, R., Chen, C.-J., Alligier, M., Laville, M., Moore, M., … Koulman, A. (2017). Odd chain fatty acids; New insights of the relationship between the gut microbiota, dietary intake, biosynthesis and glucose intolerance. Scientific Reports, 7, 44845. https://doi.org/10.1038/srep44845


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