If you indulge in oral sex you have a 9 times higher likelyhood of contracting throat cancer. This compares to 3 times for a smoker and 2.5 for a drinker. So if you are a drinker who smokes and then has oral sex I think you are in trouble. Oh and according to something I heard on the radio it seems that this risk is more prevelant among men for some reason. So it seems wedding cake isn't the only thing that stops blowjobs anymore. Can oral sex cause cancer?