← All stories
Health, Longevity & Biohacking

Exogenous testosterone can suppress sperm production ‘probably 90% of the time’, Dr Michael Eisenberg says

By Egleze Editorial Desk · Published October 11, 2026 · The Mel Robbins Podcast · The Ultimate Guide to Male Hormones & Men’s Health
Exogenous testosterone can suppress sperm production ‘probably 90% of the time’, Dr Michael Eisenberg says
The Mel Robbins Podcast
The Mel Robbins Podcast
The Ultimate Guide to Male Hormones & Men’s Health

What was said

"Um testosterone has been tested by the World Health Organization as a contraceptive. So it can actually lower sperm production. Does that pretty reliably probably 90% of the time."

Dr Michael Eisenberg says testosterone has been tested by the World Health Organization as a male contraceptive and that taking testosterone from outside the body can lower sperm production, which he describes as happening “pretty reliably” in around 90% of cases. He explains the effect as a feedback mechanism in which supplemental testosterone reduces brain signalling to the testes, which in turn reduces sperm production.

Verification status

Attributed speaker claim

Egleze verified who said this and where. The underlying claim has not been independently established by Egleze.

Source and context

Egleze verified who said this and where. The underlying claim has not been independently established by Egleze.

Speaker
Dr. Michael Eisenberg · guest
Programme
The Mel Robbins Podcast
Episode
The Ultimate Guide to Male Hormones & Men’s Health
Clip time
27:57
Original source
Watch the source segment →
From this episode
The Mel Robbins Podcast
The Mel Robbins Podcast

The Ultimate Guide to Male Hormones & Men’s Health

October 8, 2026 · 1h 9m · 1 Egleze moments
Read episode summary and key points →
More stories More from The Mel Robbins Podcast