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Tuesday, February 22, 2011

Oral sex unsafe, causes throat cancer--study




Bonnie Halpern-Felsher professor of pediatrics at the University of California, San Francisco, stated, “Adolescents don’t think oral sex is something to worry about. They view it as a way to have intimacy without having sex.”

HPV linked cancer cases rising
Cancers of the mouth are usually caused by smoking or drinking, but the latest data of throat cancer suggests that 64 percent cancers were caused by contraction of HPV infection.

For instance, in the United States the oral cancer cases linked to HPV infection have increased two-folds in the last 20 years.

Even in Britain, the cases of oropharynx cancers have risen, according to the study presented by Halpern-Felsher and other researchers at the American Association for the Advancement of Science conference in Washington DC.

“What is most strongly linked to oral HPV infection is the number of sexual partners someone has had in their lifetimes, in particular the number of individuals on whom they have performed oral sex.”--Professor Maura Gillison, Ohio State University in Columbus

A research conducted last year by Johns Hopkins University on 300 people showed that those who had more than six sex partners were nine times more likely to contract cancers of the mouth.

Further, people who had already got oral HPV infection were 32 times more likely to have cancer.
According to Oral Cancer Foundation, 37,000 people are diagnosed with oral cancer every year in the United States.

More the sex partners, higher the risk
According to scientists, when people indulge in unprotected sex, human papilloma virus gets transmitted, thus leading to lethal oral cancers.

“What is most strongly linked to oral HPV infection is the number of sexual partners someone has had in their lifetimes, in particular the number of individuals on whom they have performed oral sex,” stated Professor Maura Gillison of Ohio State University in Columbus.

“The higher the number of partners that you’ve had, the greater the odds that you’d have an oral infection,” she added.

Vaccination recommended
In order to combat the disease, doctors are suggesting that boys and girls need to be vaccinated.
Since 2008, the girls, aged 12 and 13, have been vaccinated at schools to curb the spread of virus.
The vaccines currently available are Gardasil and Cervarix, but they protect against only a few of the HPV strains.

“But while it’s reasonable to assume that HPV vaccination in girls and boys would protect against these cancers, there is as yet no evidence as to whether the current HPV vaccines are effective at preventing them.”
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