Do hard drugs promote hair growth

I just watched the Andy Irons documentary (A Pro surfer) with Andy and his brother who are known to have used hardcore drugs and are perfect Norwood 0’s. David Bowie, Bob Dylan, Robert Plant, Comedians like Richard Pryor, Joey Diaz. Do you think hardcore drugs lower your Testosterone and DHT levels? When ever I hear people saying hair is a diet thing I think absolute bullshit. David bowie lived off of cocaine in the 80s with like a can of tuna fish and some peanut butter or some shit and had perfect hair.

These guys are public. I doubt that their hair has anything to do with hard drug use.