Oral sex is the number one leading risk factor for causing throat cancer. Throat cancer is caused by a virus called HPV or the Human Papillomavirus. This virus is also known to cause anal and cervical cancers. Despite many girls being vaccinated against the leading cancer-causing strain of HPV, throat cancer cases are rising. The reason is that the vaccines do not necessarily protect against the wart-causing strains, also a type of HPV. The incidents of throat cancer have also been slowly rising since mid-90s, and one explanation for this is through oral sex. It is not about the number of times one has performed oral sex, but the number of different partners that one person has done it with. While the baseline risk of throat cancer is actually pretty low at .2% in women and .7% in men, performing oral sex on just 5 different partners can increase the risk of throat cancer by 2.5 times. While one can think of limiting their sexual partner, if that is not the possibility, using a dental dam can promote a healthier and safer oral sex experience. What Is Oral Sex?It involves using the mouth to stimulate the genitals or genital area of a partner and can also lead to sexually transmitted infections (STI) such as:GonorrheaGenital herpesSyphilisChlamydiaHPVHPV And CancerWhile oral sex does not directly cause cancer, HPV can trigger changes in the infected cells. Its genetic material becomes part of cancer cells and causes them to grow. In the US, 70% of throat cancers are caused by HPV. A person's body clears HPV in 2 years, however, those who smoke are less likely to be able to clear an HPV infection because smoking damages immune cells in the skin. Who Are At More Risk?Other than oral sex, people who smoke regularly can be at risk of throat cancer. Smoking tobacco is the most important factor for all cancers of the head and neck, including throat cancer. If you are exposed to dangerous substances like paint fumes, wood dust and shavings, or chemicals used in plastic, metal, and textile industries or are alcoholic, you may be at an increased risk of developing a throat cancer. Signs And SymptomsA mouth sore or ulcer that does not heal within 3 weeksSoft tissues of mouth becoming discolouredPain while swallowing and a feeling as if food sticks in the throatSwelling with no pain in the tonsilsPain while chewingOngoing sore throat or croaky voice with persistent coughNumbness in mouth or lipsSwelling or lump in mouthPainless lump outside of the neckOne-sided earache