It's been proven, your grandfather on your mother's side is who you'll end up like. If they're like 60 something or more and they've still got a full head of hair, you're good to go. My Grandpa still has his hair and he's gunna be 80 somehting!
I had a Spanish teacher in High School once (I think he was Italian too) who would shave his beard and it would be back full grown by the next day. Seriously.
"The dice of love are madness and turmoil."--Anakreon