Men who don't use their erections lose them, Finnish researchers find. Aging men who have sex at least once a week have only half the risk of developing erectile dysfunction as do men who have sex less often. But once-a-weekers shouldn't gloat. More sex means even less ED risk. Men who have sex at least three times a week are only one-fourth as likely to get erectile dysfunction as are men who have less-than-weekly sex.

Full story: medicinenet.com