Weirdest Scientific Discoveries

Human Sexuality 7 of 8

A new Italian study of male sexuality has discovered that the average size of male genetalia has been steadily shrinking over the past several years.

  • Male genitalia are roughly 10 percent smaller today than they were 50 years ago.
  • Excess weight gain, particularly around the waist, is a contributing factor.
  • Environmental pollutants in the air have been shown to negatively impact penis size.
  • Stress, smoking, and alcohol intake also play a factor. 

So much for all of that locker room bravado, boys.