What causes oral cancer?
For years, experts believe that the main cause of oral cancer is alcohol, smoking and chewing tobacco. But there is growing evidence that infection in the mouth with HPV, is a major cause of oral cancer.
About 25% of cancers of the mouth and 35% of cancers of the larynx associated with HPV, but the exact numbers differ between study and other, probably due to the different ways in which being the presence of the virus test, or a difference of smoking and exposure to hazardous factors other levels.
The presence of virus does not mean papillary tumor in the sample of people with mouth cancer, is that the virus that causes the disease. This is because the virus becomes part of the genetic material of cancer cells and help them to grow.
How papilloma virus up-to-mouth?
There are more than 100 kinds of types of HPV, 15 of which are linked to cancer. Those species are more dangerous types of the virus.
Most types of the virus in the mouth of movable and fully through sex, so it is likely to have oral sex is the main reason for the arrival of those species-to-mouth. High-risk Species of this virus also pass through the vaginal and anal sex also cause:
Cervical cancer
Pudendal and vaginal cancer
Anal Cancer
Penile cancer
Throat Cancer
Cancer of the tonsils
Some species are transmitted through contact through the skin and cause pimples and some are on the genitals. The types of virus that cause visible warts are less serious and do not cause cancer.
Most sexually active people (about 90%) are exposed to papilloma virus in the genitals, whether high or low risk at the age of 25 years, while only 2-3% of them are exposed to the blisters on the genitals. On this Valmazm it exposed to the infection, but only a few are affected by it.
It is not known the extent of the spread of papilloma virus infection in the mouth. A study conducted in 10/2009 that the prevalence of HPV in oral American men 10% infection, while the spread in women by 3.6%. Included risk of infection with HPV oral agents according to the study the following:
Age: reached its peak prevalence rate in the 30-34 and 60-64 age groups.
Number of sexual partners: 20% of those who had more than 20 sexual partners are infected with HPV oral.
The number of cigarettes you smoke a day.
There is good evidence to suggest that the risk factors for some cancers oral, that may be linked to sexual behavior. These factors include:
Access to oral sex by
Oral sex with four or more people in your life
With regard to men, having sex at an early age (under 18 years)
Currently, very few studies have examined the potential for oral sex to a man oral sex risk compared to women. But we know that oral pharyngeal cancer-related HPV is more common than doubled in men than women, and spreads larger in men between the ages of 40-50.
This suggests that the practice of doing oral sex from women by men is more dangerous than vice versa (ie, oral sex from woman to man). It seems that contrary to expectations, but the virus concentration in the skin of vagina most paper and moisture much higher than most and drier skin roughness of the rod and this affects the ease of transmission of the virus. Other research suggests the presence of the virus in the semen and is transmitted through ejaculation.
But it is certain that other types of infection spread through oral sex, which includes herpes and chlamydia, gonorrhea and syphilis, but this is better to protect yourself and your partner from sexually during practice safer oral sex.
How cancer causing HPV virus?
The virus does not cause cancer directly, but causes changes in infected cells infected (for example in the throat or neck of the womb), and thus can become those cancerous cells.
And very few only the viral infection will evolve to become a cancer. In 90% of cases, the body cleanses itself of the infection naturally within two years.
However, cleansing is happening less in smokers. This is because smoking is working to destroy some protective cells in the skin, called the immune cells are constantly monitoring allowing the virus. The cervical cancer and cancer pudendal rare in non-smokers, but if there is another reason of the causes of immune inhibition (a weakened immune system).
In the event of changes in the cell, it can last for long periods - can be up for decades. It seems that oral cancers related to HPV respond better to treatment of oral cancer is related to HPV.
Can you help the HPV vaccine for men and women?
Yes, as is recommended for girls between the ages of 12 and 13 years are giving them a vaccine HPV. And because it is well known that nearly all types of cervical cancers associated with HPV and the vaccine provides protection for women. Serum also protects women from cancer and vaginal pudendal caller with HPV.
In addition, it is likely that works to protect them from anal and oral cancer. There are currently no conclusive evidence that this vaccine provides protection against cancer of the mouth, but it is believed reminded, because HPV causes anal and mouth and throat cancer the same way that the cause of cervical cancer.
At the appropriate time, reduces serum HPV number of cases of infection with HPV in women, the virus will become less common among the general population - therefore, will affect a smaller number of men as well as women. This is what has already happened in Australia, where cases of genital warts fell sharply in women and men under 21 years within four years from the start of the vaccination campaign.
Serum not given to boys and men routinely. And so they do not need protection from cervical cancer.
If you are worried
If you're concerned about cancer of the mouth, see your doctor. In the event of oral cancer, the symptoms appear relatively clear and Salahzaa doctor just by looking in your mouth. And helps diagnose Sirtat mouth early on the ease of treatment, but in half of all cases of cancer being diagnosed when the spread in the neck.
And symptoms of oral cancer include the following:
The appearance of red spots or white and red on the tongue or lining of the mouth
The emergence of one or more of the mouth ulcer that does not heal, but after three weeks.
Swelling in the mouth last for more than three weeks
Pain when swallowing
The feeling of having something stuck in the throat
Read about oral cancer.
Oral sex is safer
According to a national survey in 2010-12 were related to sexual acts, lifestyle, that 75% of the men and women of the age of the study -44 had engaged in oral sex with the opposite sex in the past year.
You can practice oral sex is safer using a condom on the man's penis, because it acts as a barrier between the mouth and the penis, and also barrier (plastic box soft and very thin) is placed on the female genital, can prevent infection.