Do you really not know what "porn" or "porn use" are? The studies I linked (I see you still haven't bothered to read them) cover different kinds of porn from videos to magazines. They also cover masturbating to porn and simply watching without masturbating. Also I admit I was a little hasty on that life expectancy number there. On further investigation I could only find this: http://danielrjennings.org/TheAverageLifeExpectancyOfAPornStar.html Where the sample size is quite small. I can't find any more studies on the subject. Seems like someone doesn't want people to know. Porn is a huge industry that makes a ton of money. I still think that porn stars are more likely to die younger than the general population but I can't back that up other than the massive amounts of porn stars who die young.