Male pattern baldness, or androgenic alopecia, is a genetic condition that causes gradual hair loss. This could show up as a slowing receding hairline or thinning patches on the crown of your head.
thinning) hair. Thinning hair is embarrassing, sure, but it's more common than you might imagine: 40 million men and 20 million women in the U.S. will experience it at least once in their lifetimes.