If male pattern baldness is caused by testosterone, why are hairs on top of the head more affected by it and hairs like eyebrows, beard, inside ears etc, are affected less?

Question

If male pattern baldness is caused by testosterone, why are hairs on top of the head more affected by it and hairs like eyebrows, beard, inside ears etc, are affected less?

In: Biology

Answer 1

I think male pattern baldness is much more genetic then testosterone based. As I have a friend that has very low test levels (to the point they had to take pills to help boost their testosterone in their teens/early20s) but still started balding uptop by their late 20s.

Test levels are just a part of a bigger equation that is Male pattern baldness.