Subscribe | UPI Odd Newsletter Subscribe MONTREAL, Dec. 2 (UPI) -- A Canadian researcher said he had to cancel a pornography study because he could not find any adult men who had never viewed sexually explicit material. Professor Simon Louis Lajeunesse of the University of Montreal said he had to drastically alter his study on how pornography impacts the sexuality of men due to the limitations he discovered in finding volunteers, The Sun (Britain) reported Wednesday. Advertisement "The objective of my work is to observe the impact of pornography on the sexuality of men, and how it shapes their perception of men and women," Lajeunesse said. "We started our research seeking men in their twenties who had never consumed pornography but we couldn't find any." Lajeunesse said the information he gathered from men who had viewed porn indicated single men spent about 40 minutes viewing porn three times a week while men in committed relationships averaged 20 minute porn viewing sessions 1.7 times a week.