[youtube]https://www.youtube.com/watch?v=ey6qww-xT2E[/youtube]
;
Donald S Crain, MD and Michael T Marshall, MD and John E Kehoe, MD:
“There appears to be a relationship between pornography use and sexual dysfunction in men who report a preference for masturbation to pornography rather than sexual intercourse.”
PD69-12 SURVEY OF SEXUAL FUNCTION AND PORNOGRAPHY | Journal of Urology
www.auajournals.org