An article entitled ''New Survey of Porn use: Men and women watching in startling numbers'' declares:
{{Cquote|According to the research approximately 64 percent, or two thirds, of U.S. men admit to viewing porn at least monthly, with the number of Christian men nearly equaling the national average. When divided by age "eight out of ten (79%) men between the ages of 18 and 30 view pornography at least monthly, and two thirds (67%) of men between the ages of 31 and 49 view pornography at least monthly. One half of men between 50 and 68 looks at porn monthly."<ref>[https://www.churchmilitant.com/news/article/new-survey-of-porn-use-shows-startling-stats-for-men-and-women NEW SURVEY OF PORN USE: MEN AND WOMEN WATCHING IN STARTLING NUMBERS], Churchmilitant.com</ref>}}
Men who watch a lot of pornography, according to a study out of the Max Planck Institute for Human Development in Berlin, have smaller brain volumes.<ref>[https://kfor.com/2014/06/12/porn-may-have-negative-effects-on-the-male-cognitive-function/ Porn may have negative effects on the male cognitive function]</ref>