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Scientists Report Halving of Male Testosterone Levels Over 50 Years

Scientists have reported a significant decline in male testosterone levels, with average levels reportedly halving over the past 50 years. This trend has led some to describe it as a 'fertility crisis'.

7 Jul, 15:41 — 7 Jul, 15:41
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The GuardianMostly Factual3d ago

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

Exclusive: Researchers warn of ‘major crisis in male reproductive health’ partly driven by obesity and diabetes Men’s average testosterone levels have halved over the past 50 years, according to scientists who say that society is facing a male fertility crisis. Total testosterone levels in men declined by 54% between 1972 and 2019, according to data presented at the annual meeting of the European Society of Human Reproduction and Embryology in London on Tuesday. Continue reading...

By Hannah Devlin Science correspondent

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Coverage Timeline

First report: The Guardian · 7 Jul, 15:41Full coverage: 3 · 8hWindow: 8h
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The Guardian7 Jul, 15:41First to report

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

3h later
index-hr7 Jul, 18:27

Znanstvenici: Razina testosterona kod muškaraca se u 50 godina prepolovila

5h later
morgunbladid7 Jul, 23:50Latest update

Testósterónstig lækkað um helming: Lýsa frjósemiskreppu

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