Adrienne Gentry, Carilion reproductive endocrinology and infertility specialist, says she has seen sperm counts improve for some men a few months after starting CPAP, reports WSLS.

“Here, I’ve seen more and more male factor and I think it’s associated with men who are overweight or who have sleep apnea that hasn’t been diagnosed and treated. It’s crazy that treatment with a CPAP for two or three months completely improves their sperm to normal,” said Dr. Gentry.