The struggle to demarcate the line between testosterone and DHT related to scalp, beard and body hair growth continues.
Why is it in male whites that DHT appears to wreak havoc on the scalp and face (dermatitis, acne, etc.) but in Native Americans, Siberians and many Asians, this sexually dimorphic aspect of hair loss is not apparent or at least much less so a confounding factor?
Shouldn't DHT actually promote most hair growth in mammals? In terms of hair weight in caucasian humans, summing all body and scalp hair, it seems apparent again that females are "hairier" than males in spite of testosterone levels being much higher in males. Baldness and hair loss is one of those few things that basically has to be differentiated by the races but we do seem to see a trend that body hair/beard hair are not particularly compatible with scalp hair growth in whites and other races judging by the amount of body hair. Asians and Native Americans tend to lack body hair among males compared to whites and African Americans.
Why is scalp hair growth so sexually dimorphic among whites but not other races, to the extent that one almost assumes on sites like this one that most of the folks posting are white? This sexually dimorphic aspect appears to be muted in Asians, Siberians, Africans, etc. but hard-wired into caucasians. Does it serve any real purpose or is it some random mutation? We do know that nature is not particularly gracious in terms of allowing male pattern baldness to be addressed in white males, meaning the body is highly resistant to any "improvement" to scalp hair once the balding process has begun.