HPV transmitted by oral sex is the leading cause of oral and throat cancer now surpassing throat cancer due to tobacco products and alcohol. The main concern is whether kissing can also transmit HPV. A small John Hopkins study suggested that kissing did not increase risk of oral HPV transmission, but a more recent and larger study conducted at McGill University suggests that open-mouthed kissing actually does increase the risk of oral HPV being transmitted from one partner to the other…