7 Risk of oral sex (disease-related)

With the resurgence of venereal diseases such as syphilis and gonorrhea, as well as the widespread prevalence of new venereal diseases such as HIV, more and more people choose oral sex as an alternative way to release sexual desire safely.

When people enjoy the physical and mental pleasure of oral sex, they often ignore that although oral sex will not get you pregnant, almost all sexually transmitted diseases can spread through oral sex, in other words, oral sex that looks like “safe” oral sex. It’s not as safe as you think.

Oral sex, as an “unconventional” sexual activity, is liked by many couples, and even many people who oppose premarital sex do not reject oral sex.

Undeniably, whether you are male or female, whether you like the opposite sex or the same sex, oral sex is becoming more and more popular as a way to “express love”.

Despite the taste, we want to discuss all possible cases of disease transmission, so oral sex is not just oral sex in the ordinary sense of the word, but it is not just oral sex on the penis in the ordinary sense of the word. It also includes mouth-to-vagina and mouth-to-anus oral sex.

Now, let’s take a look at how oral sex “has sex” with sexually transmitted diseases.


Syphilis is an ancient and classic sexually transmitted disease, the prevalence of which reflects the level of sexual activity of the social population. Syphilis’s pathogen, Treponema pallidum, is abundant in lesions of the skin and mucous membranes such as chancroid, and spread from person to person through direct contact.

After syphilis spreads through the whole body of blood system, its skin mucous membrane damages can distribute in male and female external genitalia and anal circumference, also can appear in the position such as oral cavity, and won’t ache commonly, do not examine carefully often easy to ignore.

So, if your partner has syphilis and you’re not aware of the lesions in your vagina or mouth, it’s easy to get the pathogen from one side to the other through oral sex.

In fact, in some areas, nearly 15% of syphilis cases are caused by “unprotected oral sex.” Early syphilis can be treated with penicillin in sufficient quantity to achieve clinical cure and eliminate infectivity, but if the treatment is not timely, late syphilis will cause irreversible nerve, blood vessels and other systemic multi-system damage.


Gonorrhoea is a common sexually transmitted disease caused by Neisseria gonorrhoeae, relatively speaking, women are more vulnerable to gonorrhea than men, serious cases can cause infertility.

In recent years, a lot of throat, oral inflammation patients after conventional treatment is not good, an experienced doctor in the lesions to take a sample under the microscope, actually found a Neisseria gonorrhoeae! Gonorrhoeae in patients with gonorrhea, gonorrhoeae in their urogenital tract caused by a large number of pyogenic inflammation, and in the process of sexual discharge with the discharge, so that through oral sex from one side of the vulva infection of the other side of the mouth.

Conversely, if one side of the mouth is infected by Neisseria gonorrhoeae, through oral sex, gonococcus can also infect the other side of the reproductive organs. Inflammation of the mouth and throat caused by Neisseria gonorrhoeae may not have any symptoms, but also may appear obvious throat pain, suppurative tonsillitis, lymphadenopathy and other non-specific diseases.

Therefore, without pathogen testing, gonococcal oral infection is easy to confuse with other infectious diseases, and treatment is relatively difficult.

AIDS / human immunodeficiency virus (HIV)

It is well known that unprotected anal and vaginal sex can spread HIV, but it is not well understood that oral sex can spread AIDS even though the risk is low. 

Cases of HIV infection have been reported among oral sex workers, regardless of whether they ejaculate in the mouth, who say they have no form of “high-risk behavior” other than unprotected oral sex. 

The researchers calculate that the risk of HIV infection in oral sex practitioners is about 110,000. Factors such as oral ejaculation, oral pharynx and other parts of the wound ulcer or other inflammation, the other person with other sexually transmitted diseases, will increase the risk of HIV transmission through oral intercourse. 

In the case of oral sex, although the HIV virus can be detected in saliva, but relative to semen and vaginal secretions, the content is very low, some components of saliva will inhibit the activity of HIV. It is relatively rare for sexual organs to become infected with HIV by contact with saliva. 

In addition, there are a few reports that licking the vulva and other oral sex such as licking the anus may lead to the spread of HIV, although these cases cannot rule out whether there are other forms of high-risk behavior between the parties involved. As a result, it is not entirely certain that oral sex is the cause of transmission.

Genital herpes/herpes simplex virus (HSV)

It is estimated that many people have experienced blisters in their mouth. In fact, the reason why they have blisters in their mouth is because they are infected with HSV, which is easy to spread. Almost everyone has blisters.

Oral herpes is mainly caused by hsv-1, and genital herpes is mainly caused by hsv-2. However, in recent years, it has been repeatedly reported that hsv-1 is the pathogen of many new genital herpes, and the proportion of female patients with genital herpes virus detected is higher.

When asked about their medical history, they found that most of these women had been given oral sex by their partners.

During oral sex, different types of herpes virus, like distant relatives who have not seen each other for a long time, are happily active in both genitals and oral cavity, so many patients with genital herpes also suffer from viral laryngitis.

Moreover, herpes virus transmission can occur even in the dormant stage without obvious symptoms. What’s more, HSV can be transmitted through skin contact. Therefore, the use of oral condom or acyclovir and other antiviral drugs can reduce the risk of transmission, but not completely eliminate transmission.

Condyloma acuminatum/human papilloma virus (HPV)

You may not be familiar with HPV, but you certainly know the “condyloma acuminatum” this disease.

HPV is the leading cause of condyloma acuminatum.

HPV is a big family, friendly, such as 6, 11 mainly lead to a variety of genital warts, and a bad point, such as 16, 18, continuous infection may lead to cervical cancer, anal cancer and other malignant tumors.

In general, the earlier you have sex for the first time, the more partners you have, the higher the risk of HPV infection.

Recently found that the original main infection of reproductive organs HPV type 6, 11, 16, 18, etc., in the oral environment detection rate increased. And high-risk HPV, especially hpv-16 infection and oropharyngeal tumors are also related to the occurrence of oral sex, so oral sex has become the main risk factors for oropharyngeal condyloma and some tumors.

Like the herpes virus, HPV is spread by direct contact, so many precautions don’t stop it effectively, but the HPV vaccine gives people more options.


You read correctly, hepatitis virus can happen through sexual behavior indeed, whether it is hepatitis A, hepatitis B or C, can be regarded as a broad sense of sexually transmitted diseases.

The classic route of transmission of hepatitis B and C, like HIV, is through blood, mother-to-child and sexual transmission, while hepatitis A is transmitted mainly through “fecal-oral route”.

A variety of hepatitis virus antigens can be detected in blood, semen, saliva, and even faeces. In other words, these bodily fluids contain hepatitis viruses. If the sex life has a wound or mucous membrane exposure, and contact with the body fluid with enough virus, the infection is likely to occur.

Epidemiological investigation shows that STD patients, sex workers and the number of sexual partners are more homosexual or heterosexual, with a high proportion of hepatitis. Hepatitis C is less likely to spread through sexual contact than hepatitis B.

There is no conclusive evidence that hepatitis B and C can be transmitted by oral sex, but licking anal oral sex is a high-risk factor for hepatitis A. Due to asymptomatic recessive bleeding, licking the anus can also cause hepatitis B transmission.

Fortunately, both hepatitis A and hepatitis B can be prevented by vaccination.

Vaginal infections

In normal women, there are bacteria and fungi living in the vagina. These small organisms restrict and balance each other to help maintain human health. However, once the delicate balance between these microorganisms is broken, infection occurs.

Vaginal infection is not a routine sexually transmitted disease, such as mycotic vaginitis, and the use of contraceptives and antibiotics to change the internal environment of the vagina, not easy to spread through sexual intercourse.

However, candida albicans, the main pathogen of mycotic vaginitis, still exists in the oral cavity of 20-50% of normal people. Oral sex can transfer the fungus in the oral cavity to the vagina.

In addition, lysozyme and other bactericidal substances in saliva can also damage the normal environment of the vaginal flora, which is conducive to the germination of existing fungal spores in the vagina, leading to recurrent vaginal inflammation.

I’m not an ascetic, but what in the world is absolutely cost-free? To enjoy an intimate relationship to the fullest, you need to be mentally prepared to potentially harm your healthy body, and you may not be able to enjoy 100% of your sex if you want to be safe. 

Because few people know that oral sex can spread so many diseases, even fewer people insist on using oral condoms or condoms during oral sex. I’m really not here to sell oral sex condoms, but in the absence of a vaccine, sticking to condoms or condoms can have a significant preventive effect on serious sexually transmitted diseases such as syphilis, gonorrhea, and AIDS. 

Of course you can choose to trust your partner, but what I want to say is that no one is responsible for your health except yourself. 

Most venereal diseases can be cured or controlled by standard treatment.

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