{"id":47977,"date":"2017-10-17T12:01:03","date_gmt":"2017-10-17T12:01:03","guid":{"rendered":"https:\/\/www.biphoo.com\/bipnews\/?p=47977"},"modified":"2017-10-17T12:01:03","modified_gmt":"2017-10-17T12:01:03","slug":"one-in-nine-american-men-has-oral-hpv-study-finds","status":"publish","type":"post","link":"https:\/\/www.biphoo.com\/bipnews\/health\/one-in-nine-american-men-has-oral-hpv-study-finds.html","title":{"rendered":"One in nine American men has oral HPV, study finds"},"content":{"rendered":"

One in nine American men has oral HPV, study finds<\/span><\/strong><\/span><\/h2>\n

About one in nine American men is infected with the oral form of human papillomavirus (HPV), according to a new study published in the journal Annals of Internal Medicine. Nationwide, rates for oral HPV infections are 11.5% of men and 3.2% of women: 11 million men, compared with 3.2 million women, the researchers estimated.<\/span><\/p>\n

An infection with this common virus, which is transmitted through intimate skin-to-skin contact, can cause cancer in several areas of the body, including the throat, anus, penis and vagina. Nearly all men and women will become infected with at least one type of HPV, a group of 150 related viruses, at some point in their lives, according to the US Centers for Disease Control and Prevention.<\/span><\/p>\n

Previous studies have shown that men have higher rates of overall HPV infections than women. The research published Monday reveals the higher rates of oral HPV infections occurring among men, said Ashish A. Deshmukh, senior author of the study and an assistant professor at the University of Florida\u2019s College of Public Health and Health Professions.<\/span><\/p>\n

\u201cOne suspects that the HPV persists longer (means doesn\u2019t clear easily) among men and that might be causing increased prevalence,\u201d Deshmukh noted in an email.<\/span>
\n\u201cIt is also possible that men acquire oral HPV more readily than women,\u201d he said. Yet another possibility could be that, after a first infection, women develop greater resistance to subsequent infections. \u201cFurther research is needed to understand the reason behind this,\u201d Deshmukh added.<\/span><\/p>\n

A warning to men<\/span><\/p>\n

Annually, an average of 38,793 cases of HPV-related cancer \u2014 59% of them in women and 41% in men \u2014 were diagnosed in the United States between 2008 and 2012.<\/span>
\nYet, in each year within that time span, a type of head and neck cancer called oropharyngeal squamous cell carcinoma was far more likely to strike men: 12,638 cases diagnosed in men each year, compared with just 3,100 cases in women.<\/span><\/p>\n

It is the most common of all the HPV-related cancers, and its incidence among men (7.8 per 100,000) now surpasses incidence rates of cervical cancer among women (7.4 per 100,000). Cervical cancer is known to be caused by HPV.<\/span><\/p>\n

An HPV vaccine is available for both men and women and can protect against infection, yet many men are over the eligibility age of 26, and younger men have low vaccination rates. The CDC recommends the vaccination for adolescents.<\/span><\/p>\n

Deshmukh and a team of researchers used data from the National Health and Nutrition Examination Survey to look at oral HPV infection rates in addition to how many men and women have both oral and genital HPV.<\/span><\/p>\n

This CDC survey monitors the health and nutritional status of the nation\u2019s population. Participants between the ages of 18 and 69 were given a physical examination, which included laboratory tests for 37 HPV types, followed by an interview.<\/span><\/p>\n

All told, about 11.5% of study participants had an oral HPV infection.<\/span><\/p>\n

Overall, the prevalence of all high-risk and low-risk HPV types was consistently higher in men. High-risk HPV infections affected 7.3% of men overall and 1.4% of women overall, while the highest number of high-risk cases were found in the 50- to 54-year-old group for both men and women, the researchers found.<\/span><\/p>\n

HPV 16, the most common type of high-risk HPV and known to contribute to head and neck cancers, was six times higher among men (1.8%) than women (0.3%). It was most prevalent in men 50 to 69 years old, the team said.<\/span><\/p>\n

\u201cThe rates of oropharyngeal cancer among men have risen more than 300 percent in the past 40 years making oropharyngeal cancer most common HPV-related cancer in the United States,\u201d Deshmukh wrote in an email.<\/span><\/p>\n

\u201cIn contrast, the rates of oropharyngeal cancer among women have declined.\u201d<\/span><\/p>\n

High-risk groups<\/span><\/p>\n

Men who have had multiple sex partners, men who reported having sex with men, and men with genital HPV infections were found to have the highest rates of oral HPV, the study indicated.<\/span><\/p>\n

HPV infections overall and high-risk HPV oral infections in particular were \u201csignificantly associated\u201d with cigarette and marijuana use, the researchers found.<\/span><\/p>\n

\u201cOur study is also first to show that oral HPV infection prevalence was higher among Black men compared to White men (3% greater risk), those men who smoked more than 20 cigarettes daily compared to never smokers (10% greater risk), current marijuana users (6% greater risk), and men who have had more than 16 lifetime sexual partners (almost 20% greater risk),\u201d Deshmukh wrote.<\/span><\/p>\n

Eva McGhee, an assistant professor at the Charles R. Drew University of Medicine and Science, said the work of Deshmukh and his co-authors may raise awareness of the dangers of HPV.<\/span><\/p>\n

McGhee, who was not involved in the new study, also published recent research on increasing HPV vaccination rates in an effort to eliminate the virus.<\/span><\/p>\n

\u201cA lot of people are not really familiar with how devastating oral cancer is in general,\u201d she said, and most are \u201cnot knowledgeable about how HPV infection can actually cause these awful cancers.\u201d<\/span><\/p>\n

Meanwhile, she noted that \u201c85% of the population will encounter\u201d human papillomavirus in their lifetime. \u201cMost people can clear the virus,\u201d she said, but those with compromised immune systems may find it difficult to naturally rid the virus from their bodies and therefore may develop a cancer associated with HPV.<\/span><\/p>\n

\u201cFor cervical cancer, it takes at least 10 to 20 years for a cervical cancer to develop once infected\u201d with HPV, McGhee said, noting that cancer develops slowly. Based on what she\u2019s been reading, \u201cI\u2019m actually thinking it\u2019s the same duration for oral cancer as well.\u201d<\/span><\/p>\n

The authors \u201cmade it very clear that oral cancer is more prevalent among men,\u201d McGhee said.<\/span><\/p>\n

\u201cWe cannot take this HPV infection lightly, because it does not discriminate. You can develop all of these types of cancers that\u2019s associated with HPV,\u201d McGhee said. \u201cWhat\u2019s important is, we need to look at other types of preventative strategies or treatments for the older people.\u201d<\/span><\/p>\n

Deshmukh also said better methods of screening are needed to prevent cancer among men who already have HPV or who are too old for the vaccine.<\/span><\/p>\n

Even if all those eligible to receive the vaccine got it in the next year or so, \u201cit will need at least 20-30 years to reverse the rising rates of oropharyngeal cancer among US men because majority of men at risk for this cancer are already older than vaccine eligibility age.\u201d<\/span><\/p>\n

\u201cWe have methods to screen for cervical cancer; however, we still don\u2019t have ways to detect oropharyngeal precancer,\u201d Deshmukh said.<\/span><\/p>\n

Source:-\u00a0http:\/\/www.winknews.com\/2017\/10\/17\/one-in-nine-american-men-has-oral-hpv-study-finds\/<\/span><\/p>\n

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