Men’s average testosterone levels have halved in last 50 years, say scientists

Press/Media: Expert comment

Description

Expert comment about the dangers to men's fertility of taking testosterone supplementation

Period	7 Jul 2026

Title	Men’s average testosterone levels have halved in last 50 years, say scientists
Degree of recognition	International
Media name/outlet	The Guardian
Media type	Print
Country/Territory	United Kingdom
Date	7/07/26
Description	Researchers warn of ‘major crisis in male reproductive health’ partly driven by obesity and diabetes
Producer/Author	Hannah Devlin
URL	https://www.theguardian.com/society/2026/jul/07/mens-average-testosterone-levels-have-halved-in-last-50-years-say-scientists
Persons	Allan Pacey