DHT causes facial hair growth and scalp hair loss due to genetically determined differences in receptor sensitivity and density.

“The pattern of DHT receptors on the scalp, will dictate whether or not you're going to go bald everywhere or just in the front or the so called crown type baldness. And the density of the beard tells you about the density of DHT receptors.”

“because of differences in receptors, that DHT causes hair growth on the face and hair loss on the head. Is that right?”

“this varies by by Background by genetic background there are areas of the world where all the men seem to be have the same pattern of baldness like a strip of baldness down the center with hair still on the sides and and full beards that's because these patterns of DHT receptors are genetically determined”

“The pattern of DHT receptors on the scalp will dictate whether or not you're going to go bald everywhere or just in the front or soal crown type baldness”

“and the density of the beard tells you about the density of DHT receptors”

“elsewhere testosterone levels can still be very high D D HT levels in the blood can be very high and yet people will have very light beards or no beards and that's because they don't have a lot of DHT receptors in the face”

“so it's this hormone that's paradoxical it causes hair loss in the scalp but then it grows hair in the beard it grows hair in the chest and in other parts of the body”

“in other words it's far less likely that the differences between people who experience baldness and those who do not is the generation of more DHT in other words it's probably not something that results in the increase in five Alpha reductase conversion to DHT although there are clearly differences there”