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oral sex first risk factor for mouth and throat tumors

(source: ElMundo.com (Gonzalo Aguirregomezcorta) )

infections by human papilloma virus (HPV)-related oral sex is now the leading cause of cancer oral (mouth and throat tumors) in U.S.. Thus, this exceeds the snuff sexual transmission as the primary cause of these diseases in that country.

This was said Maura Gillison , researcher at the University of Ohio (USA ) in trancurso of meeting of the American Association of Scientific Progress (AAAS , in English) these days are being held in Washington . Their findings are consistent with previous studies , in concluding that citizens who have engaged in oral sex with more than six individuals have eight times possibilities of developing the disease than the less promiscuous .

As Gillison said, researchers have found a 225% increase in oral cancer cases resulting from HPV infection between 1974 and 2007, especially among white men. The Center for Disease Control and Prevention (CDC) estimated that over the past two decades has doubled the number of infected by HPV in the U.S. and predicts that half the U.S. population will contract the virus sexually active throughout life.

In most cases, be asymptomatic infection and the body itself Humans can control

no problems. However, as a percentage of the cases, the infection persists in a latent and can potentially cause precancerous lesions, first step toward cancer (as in the case of cervical tumors in women).

There are two vaccines approved by health authorities in both the USA and Europe: Gadasil and Cervarix. They were given the nod in 2006 to combat cases of HPV in cervical cancer and genital warts, but has not yet been proved effective in oral cancer infections.

However, Gillison calls for vaccinating young boys and that girls are now being vaccinated more often than men. "They have a higher risk of cancer of the mouth or throat due to unsafe sex." According to the National Cancer Institute U.S. , there are 150 different types of HPV and 40 of them can be transmitted sexually.

The figures are also alarming in other countries like Australia, UK, Sweden or Denmark. In Spain, about 4,000 diagnosed cases of oral cancer year and is one of the few cancers that has not experienced a significant reduction in mortality in recent decades.

John Curtis professor of gynecologic oncology at New York University . " oral cancer is usually diagnosed too late and this is often a stumbling block to recovery ." This calls for the prevention specialist awaiting more conclusive results with respect to vaccines.

"It is true that much remains to be done and still have not found evidence that vaccination is able to give protection against papillomavirus in oral infections. Yet I remain optimistic we should be more accessible people [the price is around 400 euros ], so that more and get more people protected. "Hygiene and annual dental visits are still, as the teacher, an effective way to control infection.

Curtis says that the last results showing the increase in cases of HPV oral cancer compared to snuff, are worrying. "The findings represent a clear message: oral sex has the same risks as vaginal or anal therefore need sensitize the youth to be prevented. "