Can watching porn/being aroused cause hair loss?

I haven't ever seen any conclusive papers published correlating arousal/sexual stimulation with increased DHT levels. I mean, DHT comes from T, but your T levels would be increased by things like exercise and proper rest as well, and I don't think too many people are going to try to minimize those for sake of hair preservation. If you'r predestined to go bald, you'll go bald. If you're predestined not to, then you won't, is the way I look at it as someone who has to inject himself twice weekly with T as per doc's orders. I've been on it for a few years, and have a full head of hair that goes more than halfway down my back.