Study: Penises Have Gotten 24% Larger In 30 Years

Stanford Medicine’s Scope Blog reports:

According to trends in male reproductive health data, sperm quality and testosterone levels have declined over the last few decades, sounding alarm bells for Michael Eisenberg, MD, a professor of urology at Stanford Medicine. It’s made him wonder: Should we be concerned about other differences in men’s reproductive health?

In a study published Feb. 14 in The World Journal of Men’s Health, Eisenberg and his colleagues compiled data from 75 studies, conducted between 1942 and 2021, that reported on the penile length of 55,761 men. The team found that the average erect penis length increased by 24% over 29 years, a trend they saw around the world.

Eisenberg said that the increase may be another indicator that environmental exposures — such as environmental pollutants or increasing sedentary lifestyles — are causing reproductive-related changes.

Read the full article.