my father has a fantastic head of silver hair.
my mother has a bit weak hair.
my mothers father had some slight temporal recession but a full head.
my fathers father had a baldspot when he got old.
no one in both families ever got slick bald.
I have a thin vertex in 28y which has been almost stable for 5-6 years.
my hairline is ok, only problem is my crown(hairs are finer, thinner and blond but no sleek bald spots)
obviously I cannot vote.
(I am on no drugs yet).