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

There are a number of factors. Scalp tightness is an overlooked factor in my opinion. Hair tends to fall out moreso at tighter areas of the scalp, especially if there are protruding ridges in the skull.