Estrone & Cancer: The Truth About “The Forgotten Estrogen”

Dr. Brendan McCarthy

In Part 3 of the Forgotten Estrogen series, Dr. Brendan McCarthy—Chief Medical Officer of Protea Medical Center in Tempe, Arizona—dives deep into the misunderstood relationship between estrone and cancer.

For decades, women have been told to fear estrogen. But is estrogen really the enemy—or is it the environment within the body that determines risk?

Dr. McCarthy explains:

• How estrone functions after menopause

• Why estrogen became wrongly vilified after the 2002 Nurse’s Health Study

• The truth about inflammation, insulin resistance, and detox pathways

• The role of methylation, glutathione, and liver detox in estrogen metabolism

• What lab markers actually matter (and how to interpret them)

• Practical ways to support your hormones through nutrition, sleep, and lifestyle

This episode is about empowerment through knowledge, not fear.
If you’ve ever been confused or afraid of estrogen, this conversation will change how you understand your body and your hormones.

Dr. Brendan McCarthy is the founder and Chief Medical Officer of Protea Medical Center in Arizona. With over two decades of experience, he’s helped thousands of patients navigate hormonal imbalances using bioidentical HRT, nutrition, and root-cause medicine. He’s also taught and mentored other physicians on integrative approaches to hormone therapy, weight loss, fertility, and more. If you’re ready to take your health seriously, this podcast is a great place to start.

👇 Tap Subscribe to learn more about what’s actually happening in your body, and what to do about it.

📘 Read Dr. McCarthy’s Book: Jump Off the Mood Swing – A Sane Woman’s Guide to Her Crazy Hormones https://www.amazon.com/Jump-Off-Mood-Swing-Hormones/dp/0999649604

📲 Follow Dr. McCarthy:

Instagram: @drbrendanmccarthy

TikTok: @drbrendanmccarthy

Website: www.protealife.com

💬 Got a question or topic for a future episode? Let us know in the comments!