It varies. I have a widow's peak with a high hairline. I also have a 17 year old photo of me that people think is current. Might have lost half an inch in the middle and corners but that's about it, and if I take after my maternal uncle (only male left standing on that side of the family) I'll be keeping most of my hair for the duration. As for the dad's side they all had the bald patch by now, but I'm still okay at 35.