Guys I am sorry if I am being paranoid but I've been really worried for the past week and need your opinion. I recently turned 18 and got my first buzz cut and I noticed an m-shaped hairline. I have thick hair and my dad isn't bald at all (He is 50). I am not sure if it was always like that but it seems thinner and weaker compared to other parts and the hairline seems much less prominent in my temple's.