You've seen it at the local pool, at the beach, or even on your own grandpa. Old grizzled men with enough back hair to knit an afghan. Rampant.
Although there's an old wives' tale that a hairy belly during pregnancy means it's a boy, the hormones really don't have anything to do with the.
However, sometimes excessive hair can be a sign of an underlying condition. We 'll explain why some people develop a hairy butt and how to.