Dr. Brendan McCarthy
Dr. Brendan McCarthy founded Protea Medical Center in 2006. In his role as Chief Medical Officer, Protea has grown and evolved into a dynamic medical center serving not only the Phoenix Valley, but also central Arizona.Dr.
- Indexed episodes, last 90 days
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- Sep 10, 2026
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- Jul 9, 2026
Latest episodes
Why Progesterone Affects Women Differently: The Route You Take Matters (opens the original)
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Why does progesterone help one woman sleep, feel calm, and finally feel like herself again—while another woman feels anxious, restless, or completely unlike herself? The answer may have a lot to do with how progesterone enters the body and what it becomes after you take it. In Part 11 of this progesterone series, Dr. Brendan McCarthy breaks down why the route of administration matters when using bioidentical oral micronized progesterone. Oral, transvaginal, transrectal, topical, and sublingual r
Does Progesterone Cause Breast Cancer? The Truth About Natural vs. Synthetic Progesterone (opens the original)
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Does progesterone cause breast cancer—or could it actually play a protective role in the body? The answer isn't as simple as the headlines make it seem. In this episode, Dr. Brendan McCarthy breaks down one of the most confusing conversations in hormone health: the difference between bioidentical progesterone and synthetic progestins. Not all medications called “progesterone” are the same. They may protect the uterine lining in similar ways, but they can behave very differently throughout the bo
Estrogen Delivery Methods Explained: Pills, Patches, Injections & Pellets (opens the original)
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How you receive estrogen matters. In this episode, Dr. Brendan McCarthy breaks down the different ways estrogen can be delivered — including oral estrogen, topical/transdermal estrogen, injections, and pellets — and explains why the route of delivery can change how the hormone behaves in your body. He discusses first-pass metabolism, estrone conversion, transdermal delivery, vaginal estrogen, injection esters, pellets, lab monitoring, and why informed consent and ongoing follow-up are essential
Vaginal Estrogen, Menopause & Hormones: What Your Doctor May Not Be Telling You (opens the original)
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Vaginal and urinary symptoms are common during perimenopause and menopause—but understanding why they happen and how different forms of estrogen work can be confusing. In Episode 8 of this hormone series, Dr. Brendan McCarthy breaks down the relationship between systemic estrogen, vaginal estrogen, estradiol, estriol, testosterone, and the genitourinary symptoms many women experience during menopause. He discusses: Why oral estrogen doesn't necessarily reach every tissue in the body the way you
Is Estrone Really the “Bad Estrogen”? What Your Labs Actually Mean (opens the original)
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An elevated estrone level can be alarming—especially when you search online and immediately find scary information about cancer, diabetes, or obesity. But does a high estrone level automatically mean something is wrong? In this episode, Dr. Brendan McCarthy, Chief Medical Officer of Protea Medical Center, takes a closer look at estrone and why it shouldn't be treated as a simple “good” or “bad” hormone. Dr. McCarthy also discusses his own evolution in understanding estrone and why he believes go
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