Study: Rise in some cancers linked to oral sex

Study: Rise in some cancers linked to oral sex - USATODAY.com: There's a worrisome uptick in the incidence of certain head and neck cancers among middle-aged and even younger Americans, and some experts link the trend to a rise in the popularity of oral sex over the past few decades. That's because the human papillomavirus is a major trigger for these cancers, and HPV can be transmitted through this type of sexual activity.