Cervical cancer, which kills 300,000 women worldwide each year, is recognized as a “sexually transmitted disease”. The use of condoms is an effective weapon against this disease, since 93% of cervical cancers are caused by a human papillomavirus transmitted through sexual intercourse. In fact, prolonged exposure to a certain type of papillomavirus is the main cause of cervical cancer. According to the International Agency for Research on Cancer (IARC), cervical cancer currently affects up to 500,000 women in the world each year. The research center, based in Lyon, France, recently released some research materials completed in Spain, Colombia and the United States by professors such as Nubia Juno and Xavier Bosch, indicating that men have a “major responsibility” in the process of their wives contracting cervical cancer. In Spain, where the incidence of cervical cancer is not very high (5-6 out of 100,000 women), the risk of cervical cancer in their wives increases five to nine times for men with human papillomavirus on their penises. The more extramarital sexual partners a husband has, especially with prostitutes, the more likely their wives are to get the disease. “Wives with unfaithful husbands have an 11 times higher risk of cervical cancer than other women.” In Colombia, where the incidence of cervical cancer is high (40 out of 100,000 women get the disease each year), it has been found that men there are often infected with the human papilloma virus, probably because of their high number of extramarital sexual partners. In Colombia, the percentage of men with HPV is as high as 25%, while in Spain, it is only 5%. Cervical cancer is the second most prevalent cancer affecting women in the world and the most common type of cancer in developing countries. Both human papillomavirus infection and cervical cancer should be considered sexually transmitted diseases. The United States has now developed a papillomavirus vaccine, which is administered to women under the age of 13, greatly reducing their chances of getting cervical cancer in the future.