Men's average testosterone levels have halved in last 50 years

Scientific data presented at a recent conference suggests that average male testosterone levels have declined by over 50% since 1972. Researchers point to obesity, diabetes, and environmental factors as potential drivers of this reproductive health crisis.
Why it matters
The decline in male fertility is a major public health concern with potential long-term implications for global demographics and human health.
Researchers looked at data on male testosterone levels from more than 100,000 men captured between 1972 and 2019. Researchers looked at data on male testosterone levels from more than 100,000 men captured between 1972 and 2019. Men's health 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
The article reports on scientific findings and includes expert commentary while acknowledging the debate surrounding the data.
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