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September 27, 2025 64 mins
Today, I am thrilled to be joined by Dr. Sarah Hill, an award-winning researcher, professor, and leading voice in the field of women’s hormones and brain health. She wrote This Is Your Brain on Birth Control and has also authored The Period Brain, which is due to be released this fall. In our conversation, Dr. Hill dispels the myths surrounding bioidentical hormones and shares her view on how women are not biologically disordered, but just ignored by science. We dive into research on how oral contraceptives affect the brain and how the pill creates a dysregulated stress response, particularly in women with histories of adverse childhood experiences. We also explore progesterone through the lens of an evolutionary biologist and neuro-endocrinologist, highlighting its role in supporting GABAergic tone, the key differences between synthetic progestins and natural progesterone, and research on PMS and PMDD, including practical ways to manage those issues. This helpful discussion with Dr. Sarah Hill is a must-listen for women at every stage of life. IN THIS EPISODE, YOU WILL LEARN: Why has science ignored women? How oral contraceptives affect the way women perceive the world How early-life trauma impacts the ability to manage stress in adulthood Often-overlooked benefits of progesterone The different ways estrogen and progesterone impact women’s ability to build muscle mass from resistance training The positive effects of the GABAergic system in the brain The problem with combined hormone therapy How progesterone gets ignored and villainized, even though it can help women experience better lives How the protective and anti-inflammatory properties of progesterone support brain health and enhance neuroplasticity What the research suggests for women experiencing severe PMS or PMDD Connect with Cynthia Thurlow   Follow on X, Instagram & LinkedIn Check out Cynthia’s website Submit your questions to support@cynthiathurlow.com Connect with Dr. Sarah Hill On her website Instagram Pre-order a copy of Dr. Hill’s new book, The Period Brain: The New Science of Why We PMS and How to Fix It, which will be on sale at the end of September. 
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