Podcast
11
Bonus: Testosterone, sport and the hormone rules that hold women back
Duration:
Thursday, January 1, 2026
Available on:
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In this episode, Dr Louise Newson speaks with elite functional fitness athlete and coach Kelly Marshall about hormones, performance and why female athletes are still facing barriers that make no scientific sense.

Kelly shares how years of pushing through fatigue, injuries and brain fog eventually led her to uncover severely low hormone levels, something she never expected as a high-performing athlete. She reflects on how easily symptoms are normalised, especially in sport, and what changed once she finally got answers.

Together, they discuss the role of testosterone in women’s health, strength and recovery and why its use remains controversial and misunderstood in competitive sport. They explore the ethical and emotional impact of restrictive rules, the difference between therapeutic hormone replacement and performance-enhancing drugs and the difficult choices women are forced to make when trying to protect both their health and their careers.

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