Been trying to find the article, found something similar:
When having sex or watching porn, dopamine is released into a region of the brain responsible for emotion and learning, giving the viewer a sense of sharp focus and a sense of craving: “I have got to have this thing; this is what I need right now.” It supplies a great sense of pleasure. The next time the viewer gets the “itch” for more sexual pleasure, small packets of dopamine are released in the brain telling the user: “Remember where you got your fix last time. Go there to get it.”
Then it becomes a vicious cycle, needing the dopamine hit, and the more the viewer watches, the brain desentitizes and needs something more... in porn addiction the viewer may start looking for more extreme porn to get the same dopamine hit.
I do think most men won't be too affected, not to the point of actually doing another harm. I think when you get a certain type of man and a certain set of circumstances it may lead to offending behaviour.
For example a man who had issues with women to start with, grew up in a violent home, poor social skills, unemployed so can look at porn all day, etc.. then the addition of porn can lead to the perfect storm where the individual becomes a danger.