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

Your photos, your masturbation habits, grey hair, and wide scalp/forehead has no correlation.  Not sure how you may think they are all realated. 

I'm not aware of any proven causative effect of masturbation on greying or thinning hair.  You are showing some signs of thinning and if you are concerned about your hair loss, you should seek treatment right away.  Treatments include medications such as finasteride and rogaine, but cellular therapies such as PRP (Platelet Rich Plasma) as also very effective.  

You are masturbating often and are worrying about the changes you perceived in your head, forehead and hairline. Masturbation does not create such changes. Do what you need to do.