Eat These Foods + Spices for 8 Weeks To Get 3 Years Younger | Kara Fitzgerald

Dave Asprey

May 5, 2026

Episode description

Your biological age can drop by over three years in just eight weeks, and the tools to do it are already in your kitchen. This episode breaks down the cutting-edge science of methylation, polyphenols, Yamanaka mimetics, and epigenetic reprogramming that is rewriting what we know about anti-aging, longevity, and human performance.

-Watch this episode on YouTube for the full video experience: https://www.youtube.com/@DaveAspreyBPR

Host Dave Asprey sits down with Dr. Kara Fitzgerald, ND, IFMCP, a leading voice in functional medicine and epigenetic aging research. Her award-winning clinical studies published in Aging (2021, 2023, and 2025) proved that targeted diet and lifestyle interventions can measurably reverse biological age on validated epigenetic clocks. She is the author of Younger You, an IFM faculty member and Certified Practitioner, and one of the most rigorously credentialed researchers working at the intersection of functional medicine, nutrition, and longevity science today.

Together, they go deep on Yamanaka factors, the Nobel Prize-winning discovery that can wind back a 90-year-old cell to its 20s, and the emerging class of compounds called Yamanaka mimetics, polyphenol-based supplements that may replicate some of those same cellular rejuvenation effects without the risks. They cover why polyphenols do the heavy lifting in biological age reversal, how AI is accelerating longevity research, and why the dark matter of nutrition may matter more than macros, carnivore protocols, or ketosis for long-term health. They also get into oxalates, mitochondria, fibroids, ovarian rejuvenation, and why the original Horvath clock may be more relevant than scientists thought.

This is essential listening for anyone serious about biohacking, longevity, supplements, functional medicine, anti-aging, brain optimization, human performance, and using smarter not harder strategies to take control of your biology.

You'll Learn:

How diet, supplements, and meditation reversed biological age by over three years in eight weeks in a randomized controlled trial
What Yamanaka factors are and why scientists are calling partial cellular reprogramming the future of anti-aging
Which polyphenols do the heaviest lifting for epigenetic rejuvenation, including EGCG, urolithin A, rosemary, marjoram, and yarrow
Why the Horvath epigenetic clock may actually be touching on programmatic aging rather than just exposomic wear and tear
How AI is unlocking patterns in longevity data that no human researcher could find alone
The problem with high-oxalate superfoods and how to get polyphenol benefits without the inflammatory downside
Why ovarian rejuvenation may be the highest-leverage Yamanaka application for women's lo

Mindsip insights from this episode:

Utilize carnivore diet as a short-term elimination tool

The carnivore diet can be fabulously effective as a short-term elimination diet, but most people who adhere to it long-term will likely 'crash and burn'.

#carnivore

#nutrition

Rejuvenate ovaries to enhance longevity and protect vital organs

For women, rejuvenating the ovaries could be the highest leverage point for longevity, as it sustains hormones that protect the brain, heart, bones, and skin.

#longevity

#menopause

Reverse biological age with diet, supplements, and meditation

A study reversed biological age by over three years in just eight weeks using a specific diet, supplements, and meditation.

#biological-age

#supplement

Biobank stem cells and test hormone levels around age 23

The ideal time to biobank your stem cells and get baseline hormone level testing is around age 23 to establish your personal healthy range for future reference.

#stem-cell

#testing

Reverse cell age with Yamanaka factors

Yamanaka factors are a cocktail of transcription factors that can revert specialized adult cells all the way back to their original pluripotent stem cell state.

#regeneration

#stem-cell

Differentiate between exposomic and programmatic aging for better health strategies

Aging can be split into 'exposomic aging' from lifestyle and environmental wear-and-tear, and 'programmatic aging,' which is a built-in biological clock that may be manipulated by Yamanaka factors.

#aging

#longevity

Replicate cell rejuvenation with Yamanaka mimetics

Compounds called 'Yamanaka mimetics,' which include alpha-ketoglutarate (AKG) and sodium butyrate, may be able to gently replicate the cell-rejuvenating effects of Yamanaka factors.

#regeneration

#supplement

Reduce high oxalate intake to alleviate chronic pain

High oxalate intake from foods like turmeric root and chocolate is linked to broad-spectrum inflammation, connective tissue pain, and mitochondrial toxicity.

#oxalate

#pain

Prioritize nutrients over exercise for age reversal

In a study on middle-aged men, specific nutrients like polyphenols were the primary drivers of age reversal, while exercise had no discernible effect.

#aging

#nutrition

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