I’ve seen so many old guys rocking beautiful beards yet their head is literally devoid of hair. How come balding doesn’t affect beards or the rest of their body?
In: Biology
Male pattern baldness (Androgenetic Alopecia) is caused primarily by DHT which is an androgen (hormone) created from testosterone. DHT binds to receptors in the scalp that cause hair follicles to shrink over time which leads to hair loss. DHT also causes higher body and facial hair growth because it stimulates the androgen receptors on the face. DHT is good / required for body and facial hair, but causes scalp hair loss.
[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4174066/](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4174066/)
[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6989660/](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6989660/)
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