For the first time in history, ovarian biological age can be measured, and I became the first woman in the world to take the test.

Until now, women have had no real way to understand how their ovaries are aging beyond rough estimates like AMH. But this new machine-learning algorithm, trained on over 40,000 real women across different life stages, analyzes hormone biomarkers, body composition, and reproductive history to estimate ovarian age relative to chronological age.

This is a massive step forward in female longevity science.

In this episode, I walk through what the test measures, how the algorithm works, and what becoming the first data point actually means, not just for me, but for women collectively. We also explore what may be driving ovarian aging in the first place.

I also share how I’m now testing specific interventions in isolation, including hyperbaric oxygen therapy, to determine whether we can meaningfully influence ovarian aging over time.

Ovarian lifespan is significantly shorter than overall lifespan and once we can measure it, we can begin to understand it.

This is only the first step in redefining female longevity.

Join the most comprehensive *female-specific community for health and longevity optimization.* After over a decade dedicated to human performance and women’s health, I created this space to share everything you need to know to optimize health and lifespan. Inside, you’ll get access to exclusive protocols, live Q&As, the latest female longevity science, and a private, supportive community of like-minded women.

https://kayla-barnes-lentz.circle.so/checkout/become-a-member

*Kayla's social + website:*

Instagram: https://www.instagram.com/kaylabarnes/

TikTok: https://www.tiktok.com/@femalelongevity

Twitter: https://x.com/femalelongevity

Website: https://www.kaylabarnes.com

Spotify: https://open.spotify.com/show/4OLWWn22RGB0argbRPvAaQ

Apple: https://podcasts.apple.com/us/podcast/longevity-optimization-with-kayla-barnes-lentz/id1591130227

Follow Her Female Protocol: https://www.protocol.kaylabarnes.com

SHOW NOTES:

00:01:03 Timeless Biotech Website:https://timelessbiotech.com/

00:01:13 Podcast With The Founder of Timeless Biotech:https://www.youtube.com/watch?v=s-_EuNUwjsM&t=57s

00:04:12 Kayla’s Protocols:https://www.protocol.kaylabarnes.com/

00:09:58 Podcast With Dr. Chris Masterjohn:https://www.youtube.com/watch?v=z3quYW_pCDU

00:10:48 Study About Ovarian Stiffness Increasehttps://pmc.ncbi.nlm.nih.gov/articles/PMC7681059/#acel13259-sec-0002

00:16:22 Study For Increased PFAShttps://pubmed.ncbi.nlm.nih.gov/41620147/

00:17:56 Red Light Therapy Study:

https://www.sciencedirect.com/science/article/abs/pii/S1011134424001842?via=ihub

Perimenopause is not just about hormones, it’s a metabolic transition that affects insulin sensitivity, gut health, stress tolerance, and long-term disease risk.

In this episode, Cynthia Thurlow, board-certified nurse practitioner and functional medicine expert, explains how women’s metabolism changes in midlife and why insulin resistance, poor stress resilience, and gut dysfunction often appear years before menopause.

She breaks down how perimenopause can begin earlier than most women expect, why symptoms vary so widely, and how lifestyle factors like fasting, exercise intensity, sleep, alcohol, and chronic stress interact with hormones during this transition.

Join the most comprehensive *female-specific community for health and longevity optimization.* After over a decade dedicated to human performance and women’s health, I created this space to share everything you need to know to optimize health and lifespan. Inside, you’ll get access to exclusive protocols, live Q&As, the latest female longevity science, and a private, supportive community of like-minded women.https://kayla-barnes-lentz.circle.so/checkout/become-a-member

This conversation explores:

• Why insulin resistance often emerges in perimenopause

• How stress and trauma shape metabolic and hormonal health

• The role of gut health in PMS, mood, and estrogen balance

• When fasting helps women and when it makes things worse

• Why “doing everything right” can still lead to symptoms

• How to individualize nutrition, training, and recovery in midlife

Connect with Kayla:

Instagram:https://www.instagram.com/kaylabarnes/

TikTok:https://www.tiktok.com/@femalelongevity

Twitter:https://x.com/femalelongevity

Website:https://www.kaylabarnes.com/

YouTube: www.youtube.com/@KaylaBarnesLentz

Apple: https://podcasts.apple.com/us/podcast...Website:https://www.protocol.kaylabarnes.com

Learn more about Cynthia Thurlow

Instagram: https://www.instagram.com/cynthia_thurlow_/

YouTube: https://www.youtube.com/cynthiathurlow

Website: https://www.cynthiathurlow.com/

Pre-order her upcoming book: The Menopause Gut (28th of April 2026):https://www.penguinrandomhouse.com/books/777129/the-menopause-gut-by-cynthia-thurlow-np/?mcp…

ACE (Adverse Childhood Experiences) questionnaire:https://www.acesaware.org/wp-content/uploads/2022/07/ACE-Questionnaire-for-Adults-Identified-English-rev.7.26.22.pdf

When cellular energy production is impaired, no diet, supplement, or health protocol can work as intended.

In this episode, Dr. Chris Masterjohn, nutrition scientist and expert in micronutrients and metabolism, explains why mitochondrial function is the limiting factor behind stalled progress, persistent fatigue, and supplements that stop working over time.

He breaks down why vitamin D supplementation often creates new problems when it is taken without proper nutrient balance, how high doses can disrupt other systems in the body, and why sunlight has biological effects that vitamin D pills alone cannot replicate.

Join the most comprehensive *female-specific community for health and longevity optimization.* After over a decade dedicated to human performance and women’s health, I created this space to share everything you need to know to optimize health and lifespan. Inside, you’ll get access to exclusive protocols, live Q&As, the latest female longevity science, and a private, supportive community of like-minded women.https://kayla-barnes-lentz.circle.so/checkout/become-a-member

This conversation explores:

• Why mitochondrial bottlenecks explain most energy and health plateaus

• How micronutrient deficiencies undermine supplements and biohacks

• When creatine supports cellular energy and why it works differently than most supplements

• Why vitamin D supplementation can backfire without context and balance

• Why sunlight affects biology in ways supplements cannot replace

• How diet, fasting, and exercise interact with mitochondrial capacity

• Why optimizing one system often breaks another without proper foundations

Connect with Kayla:

Instagram: https://www.instagram.com/kaylabarnes/

TikTok: https://www.tiktok.com/@femalelongevity

Twitter:https://x.com/femalelongevity

Website:https://www.kaylabarnes.com/

Spotify:https://open.spotify.com/show/4OLWWn22...

Apple: https://podcasts.apple.com/us/podcast...

Follow Her Female Protocol: https://www.protocol.kaylabarnes.com
Learn more about Dr Chris Masterjohn’s work:

Website: https://www.chrismasterjohn-phd.com/Instagram: https://www.instagram.com/chrismasterjohn/YouTube: https://www.youtube.com/@chrismasterjohn

Is your environment silently sabotaging your fertility?

Dr. Ann Shippy joins the show to reveal how hidden toxins, mold, and overlooked cellular damage may be accelerating ovarian aging and how to reclaim your fertility before it’s too late. From infertility misdiagnoses to rising autism rates, we dive deep into the tests most doctors never run, and the real impact your body’s toxic load has on future generations.

Kayla's social + website:

Instagram: kaylabarnes

TikTok: femalelongevity

Twitter: https://x.com/femalelongevity

Website: https://www.kaylabarnes.com

Spotify: https://open.spotify.com/show/4OLWWn2...

Apple: https://podcasts.apple.com/us/podcast...

Follow Her Female Protocol: https://www.protocol.kaylabarnes.com

Dr. Ann Shippy social + website:

Instagram: https://www.instagram.com/annshippymd/
Website: https://annshippymd.com/

Ashley Koff is a registered dietitian and author who spent 20 years discovering that weight and health aren't separate issues, they're connected through "weight health hormones." After her own struggles with restrictive eating despite doing everything "right," a functional medicine doctor helped her understand what was actually broken, and that was, her body's natural hormone function.

In this episode, Ashley explains why GLP-1 medications like Ozempic work, who actually needs them, and the critical foundational work required to avoid devastating rebounds. She reveals why current dietary guidelines fail women, shares her free weight health hormone assessment, cuts through the seed oil controversy, and offers practical strategies for eating healthy on any budget.

If you're confused about nutrition, frustrated that eating healthy isn't working, or curious about GLP-1 medications, this conversation provides the clarity you've been missing.

Guest’s socials + website:

Instagram: @ashleykoffapproved

Website: https://thebetternutritionprogram.com/

Kayla's social + website:

Instagram: https://www.instagram.com/kaylabarnes/

TikTok: https://www.tiktok.com/@femalelongevity

Twitter: https://x.com/femalelongevity

Website: https://www.kaylabarnes.com

Spotify: https://open.spotify.com/show/4OLWWn22RGB0argbRPvAaQ

Apple: https://podcasts.apple.com/us/podcast/longevity-optimization-with-kayla-barnes-lentz/id1591130227

Follow Her Female Protocol: https://www.protocol.kaylabarnes.com

Become a Member of Kayla's Female Longevity Membership: https://kayla-barnes-lentz.circle.so/checkout/become-a-member