Harden the F Up No More: Bioharmony for Midlife Athletes with Dr. Tamsin Lewis (Episode 269)

Apr 8, 2026

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As athletic women, we often pride ourselves on grit—shoving down feelings, pushing through pain and measuring every metric in pursuit of optimization. But what does that cost us long-term? And how does it hold up in the chaos of midlife and menopause? This week, former Ironman champion and lifestyle medicine practitioner Dr. Tamsin Lewis joins us to explore the evolution from "harden the F up" culture toward bioharmony—a compassionate, context-driven alternative to the more rigid biohacking that’s popular today. Drawing from her high-performance athletic career and hard-won personal experience, she unpacks what she’s learned about female biology, hormones, and recovery. We also dig into hormone therapy, nervous system regulation, autophagy, regeneration, and embracing midlife as a "second spring"—a season for new pursuits that expand our identity, horizons, and even cognitive capacity. Prepare for a deep dive into the menopause transition through the lens of mindset, biology, and the nervous system.

Dr Tamsin Lewis, also known as Dr Tam, is a physician, longevity expert, and human‑flourishing advocate. Graduating with honours in Medicine from King’s College London and Guy’s & St Thomas’ Hospitals, with a BSc in Neuroscience and the Biology of Ageing, her work bridges psychiatry, sports & exercise medicine, nutritional and functional medicine. As Founder and Medical Director of Wellgevity®, she leads a personalised, diagnostics‑driven approach to health and emotional regulation—the Wellgevity® Method—integrating biomarkers, brain‑body synchrony, and evidence‑based recovery, while consulting at Reborne Longevity in London, where she delivers longevity medicine through a bioharmony lens. You can learn more about her and her work at www.wellgevity.com

Resources:

Progestogens and endometrial protection, BMS Tool for Clinicians

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