Aaron Hartman, MDFunctional Medicine Specialist | Clinical Researcher

Testosterone Levels Are Dropping

18 Oct 2024 · 1 min

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Aaron Hartman, MD, presents evidence that testosterone in 45-year-old men is about 50% lower than two decades ago, with levels dropping roughly 1% annually. Three large studies from the US and Europe document the decline, raising questions about male fertility and sexual function.

Questions this video answers

About 50% lower (roughly half).

About 1% per year.

Three large longitudinal studies in the US and Europe.

Chapters

In 20 years, if we don't change the current path we're on, our entire male population will be impotent and infertile. And I'm not exaggerating when I say that, because studies show, like you said, there have been three massive longitudinal studies here in the US And Europe that have all showed the same thing, and that is that drop in testosterone you're talking about. And what that drop looks is you look at a 45 year old guy today, let's just say, and you compare him to a 45 year old guy 20 years ago, and his free testosterone level, we'll talk about free versus total. I'm sure the free testosterone level is half what it was 20 years ago. It's almost 50% lower than it was 20 years ago. And it continues to drop, as you said, about 1% every year.