A researcher has claimed that watching porn makes straight men support same sex marriages.

Mark Regnerus, who became infamous earlier this year when he published a now widely discredited study that supposedly found children of gay parents are worse off than those of straight parents, made the claim on the Witherspoon Institute website last week.

According to Regnerus, porn undermines the concept that in the act of sexual intercourse, people share their body and whole self permanently and exclusively and reinforces the idea that people can share their bodies but not their inmost selves, and that they can do so temporarily and not exclusively without harm, Huffingtonpost reported.

Of the men who view pornographic material every day or almost every day, 54 percent strongly agreed that gay and lesbian marriage should be legal, compared with around 13% of those whose porn-use patterns were either monthly or less often than that, Regnerus revealed.

Heavy porn users are also more likely to agree that gay and lesbian couples do just as good a job raising children as heterosexual couples.

Only 26% of the lightest porn users agreed, compared to 63% of the heaviest consumers.

The more porn they consume, the more they affirm this statement, Regnerus stated.