I noticed that my beard grew quite late as compared to my other friend's of same age. Now I'm also noticing that it's not symmetric at one specific spot. Hair joining moustache & chin are not equally dense,Right side, it's quite dense while left side, its like 30℅ of right side. That's why I always have to trim the beard, which joins moustache & chin. I don't have  History of any specific disease but I have been involved in masturbation for almost 10 years. Is it possible that it could have impacted  any specific hormone which is causing abnormal growth of beard?