The incidence of tonsil cancer has tripled in the city of Stockholm since the 1970s and doctors at the world-famous Karolinska Institute there think they know why.
Oral sex. Or perhaps French kissing. And changes in sexual behavior that took place 20 or 30 years ago, says Tina Dalianis, a professor of tumor virology at Karolinska.
Her research has directly linked the increase in tonsil cancers to the human papillomavirus (HPV). There are more than 100 different types of HPV, some of which cause cancer. One, for example, is responsible for 99.7% of all cervical cancers.
The study found that patients with HPV in their mouths are much more likely to get tonsil cancer than patients who don’t have it. In fact for patients who are HPV-positive, the rate of tonsil cancer has gone up seven times since the '70s, Dalianis says. It takes between 20 and 30 years for an HPV infection to result in cancer, so the people getting sick now were infected in the '70s and '80s.
“It’s an epidemic,” she says.
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