Upile T, Jerjes W, Al-Khawalde M, Radhi H. Oral sex, cancer and death: sexually transmitted cancers. Head Neck Oncol. 2012 Jun 6;4(1):31.

We briefly highlight the growing body of recent evidence linking unprotected oral sex with the development of some types of head and neck cancer in younger patients. These tumours appear to be increasing in incidence although the development of more sensitive methods of HPV detection may be a confounding factor.
Source: Head and Neck Oncology - Category: Cancer & Oncology Source Type: research