"Michael Douglas... has revealed that his throat cancer was apparently caused by performing oral sex."

"HPV, the sexually transmitted virus best known as a cause of cervical and anal cancer and genital warts, is thought to be responsible for an increasing proportion of oral cancers...."

Mahesh Kumar, a consultant head and neck surgeon in London, confirmed that the last decade has seen a dramatic rise in this form of cancer, particularly among younger sufferers. Recent studies of 1,316 patients with oral cancer found that 57% of them were HPV-16 positive.

"It has been established beyond reasonable doubt that the HPV type 16 is the causative agent in oropharyngeal cancer," said Kumar...

But Kumar expressed scepticism that Douglas's cancer was caused solely by HPV, and surprise at Douglas's assertion that cunnilingus could also help cure the condition. "Maybe he thinks that more exposure to the virus will boost his immune system. But medically, that just doesn't make sense."