I keep hearing these things if you masturbate every night 10-20 years from now it will cause health problems?

Not true, Johnny: I'm sorry people tell you this stuff to frighten you. Essentially all young men enjoy their bodies several times a week. It won't make you bald, demented, an unfit husband, a sexual cripple, infertile, hairy, smooth or anything else. Vary your technique, don't rush, and maybe you can think about something nice instead of something nasty -- maybe even that one special person. Talked with dad?