Sexual activity has long been associated with spreading disease and risky behavior in general, but a new study has good news for promiscuous women: they’re less likely to get oral cancer.

The human papillomavirus (HPV) is one of the most common sexually transmitted diseases, yet women who have a higher number of sexual partners are less likely to get cancer of the throat and mouth from HPV, according to a Daily Mail report.

The findings were presented at the American Association for the Advancement of Science’s annual meeting. The researchers had not so good news for men: they were twice as likely to get HPV-driven cancers of the head and neck the more oral sex partners they have, with middle aged white men being the highest risk group.

It also applies to vaginal sex in addition to oral sex. Women who have a greater number of sex partners face a lower risk of oral HPV. Scientists think this is because the woman’s body starts an immune response when it is first exposed to HPV in the vagina, which later results in it stopping an oral HPV infection. Men don’t have this same strong immune response, however.