Hormones & sexual health

What the evidence shows on hormone therapies and sexual health, from testosterone and HRT to treatments for low desire.

July 9, 2026

Cortisol gets blamed for belly fat, heart disease, and burnout. The evidence says most of that is wrong. Here is what the data actually shows about cortisol.

June 11, 2026

Hypoactive sexual desire disorder is a real diagnosis with FDA-approved drugs. Here is what the evidence on Addyi, Vyleesi, and testosterone actually shows.

April 30, 2026

A nephrologist breaks down testosterone replacement therapy: who actually benefits, what the trials show, the real risks, and why most claims are overblown.

April 23, 2026

A nephrologist breaks down hormone replacement therapy: what the Women's Health Initiative really showed, who benefits, and what HRT can and can't do.

February 12, 2026

Sperm counts have dropped over the past 50 years, but the cause isn't cell phones, soy, or laptops. Here's what the evidence actually says.

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F. Perry Wilson, MD MSCE

About the author

F. Perry Wilson, MD MSCE is a nephrologist, clinical researcher, and Associate Professor of Medicine and Public Health at Yale University, where he directs the Clinical and Translational Research Accelerator. He hosts the Wellness, Actually podcast with Emily Oster, writes the weekly Impact Factor column on Medscape, and is the author of How Medicine Works and When It Doesn't (Grand Central, 2023).

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