American men are getting heftier, but worries that their waistlines and sperm counts are inversely related might be a little overrated.
Nanette Santoro from the Albert Einstein College of Medicine in the Bronx just finished a study finding that men with very high body mass indexes did not show decreased sperm counts or lowered sperm quality, contrary to conventional wisdom. She and her colleagues studied nearly 300 overweight men between the ages of 18 and 50, and found that while many showed lower testosterone levels, the subjects’ sperm production was no different than ordinary men.
