2021 study in World Journal of Men's Health finds a 25% increase in average penis size and a 60% drop in sperm quality since 1992.

2021 study in World Journal of Men's Health reveals a 25% increase in average penis size (from 12.19 cm to 15.34 cm) since 1992, linked to sedentary lifestyles and hormone-disrupting substances. This increase coincides with a 60% drop in sperm quality due to genital defects, tumors, and decreased sperm count and testosterone levels. Researchers emphasize the need for further investigation to understand the implications of these changes.

8 months ago
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