Testicles and Balding

I recently heard of a story(second hand) where a pair of identical twins, due to an unfortunate accident, were part of an interesting experiment.

Apparently at the age of 21 one of the pair lost his testis in some motor vehicle accident. Now both are in their fifties, the one who was in this accident has a full head of hair, and his identical twin is quite bald. Does this mean that removing your testis stops balding?

I am terribly sorry if this a very silly question.

Thanks for your time

Good question! I have not heard of that story, but that is a very real possibility. Male pattern hair loss is in part due to a hormone called dihydrotestosterone (DHT). DHT is a breakdown product of testosterone. If a man is missing his testicles, which is the source of the majority of testosterone in his body, he will have a very low level of DHT and should not bald.