When I balding?

[manforum93]

http://s18.postimg.org/4okhm7ouh/20160904_1945541.jpg when I balding If I now look like this...I am 23,and have genetic predisposition to go bald,and have some cousins who balding too early,in late 20s...generally in my ethnicity a lot guys go bald early,why this happen??