The Forgotten Protector: Why Progesterone Decline in Aging Men May Be a Hidden Driver of Alzheimer’s Disease

Progesterone decline in aging men and its potential connection to Alzheimer's disease

Progesterone, Men, and Alzheimer’s Disease: The Missing Hormonal Link?

Most of us think of progesterone as a women’s hormone. Carol Petersen has spent decades correcting that misconception. But even within the world of progressive hormone medicine, one story has gone largely untold: the role of progesterone’s late-life collapse in men as a potential key driver of Alzheimer’s disease.

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Face and Hormones: The Visible Signs of Imbalance

Face and Hormes

Hormones and your face: these are closely linked. Your reflection can reveal signs of imbalance if you know what to look for. Let’s start at the top to see what you might find.

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Follow-Up: Progesterone, Weight, Appetite, and Energy Balance — Nuanced Insights from Dr. Jerilynn Prior

Progesterone increases appetite without weight gain during the luteal phase

A few days after publishing my piece on progesterone and weight gain, I received a thoughtful email from Dr. Jerilynn C. Prior, MD, FRCPC, Professor Emerita of Medicine and a leading researcher in women’s reproductive health and menstrual cycle science. She kindly gave me permission to share her comments here.

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Progesterone and Weight Gain: What the Dose-Dependent Data Actually Says

Progesterone and weight gain infographic showing metabolic benefits and insulin sensitivity data for bio-identical hormones.

If you’ve recently started progesterone therapy—whether for menopause, IVF, perimenopause, or cycle regulation—you might have noticed a shift on the scale and asked yourself: does progesterone cause weight gain? The relationship between progesterone and weight gain is more nuanced than a simple “yes” or “no,” and the answer is highly dose-dependent.

🧠 A note from Carol

I’m a functional medicine practitioner, and I’ve spent years helping women separate hormone fact from hormone fiction. Here’s what surprises most of my new patients: the thing they’ve been blaming for their weight gain (progesterone) is often not the real problem at all. I wrote this article to give you the data — and a fresh perspective.

If something here resonates with your own experience, let’s talk.
👉 Book a 15-minute consult

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Progesterone and Adrenaline: Calm vs. Fight or Flight

A light-toned medical illustration on a parchment-style background depicting the hormonal balance between progesterone and adrenaline. The left side features soft blue neural pathways and a brain labeled "Progesterone: Calm & Relaxation." The right side shows warm orange energy lines and adrenal glands labeled "Adrenaline: Fight-or-Flight." A central yin-yang symbol connects the two sides, illustrating a state of equilibrium.

What comes to mind when you think of stress? For most of us, it’s adrenaline — the hormone that primes our body for “fight or flight,” increasing heart rate and sharpening our senses. But what counterbalances this powerful system? The answer, lies in an unexpected source: progesterone. This article explores the fascinating science of how progesterone and adrenaline interact, creating a dynamic interplay that affects mood, anxiety, and overall resilience.

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