A group of scientists who are studying the effects of pornography had their first setback in the search: they found one man who has not seen pornographic movie in his life.

Investigators wanted to compare men whose age was around 20 years that have never been exposed to pornography as regular users.

"There are guys who never watched porn," said Professor Simon Louis Lajeunesse, University of Montreal.

The focus of research has become the habits of men who use pornography regularly. Single men watch movies three times a week for about 40 minutes, the study said. Only if they already have a relationship to the consumption of low-porno to 1.7 times per week, for about 20 minutes.

The survey also revealed that 90% of the material is found on the Internet, while the other 10% are withdrawn in video stores. The boys begin to watch porn at 10 years, the study said.

Source: The Gazette