Correlation between premature hair greying, scalp widening and masturbation? (Photo)

Hi, I'm 23 years old & half of my hair have already turned grey. I also noticed that my scalp is widening. I did not have this problem 6 months ago. I read somewhere that excessive masturbation causes hair thinning and hair loss. Is that true? I just realised that I might have been masturbating daily and sometimes as many as 4-5 times per day since more than a year. Does that cause this problem? In any case how do I reverse this problem and get thicker hair density? Please advice...