Oral sex is often perceived in the public consciousness as a "low-risk" activity — and in a relative sense, that's true compared to vaginal/anal contact, but "low" doesn't mean "zero." This misconception is one of the main reasons why oral sex is often left unprotected.
Which infections are transmitted orally?
Chlamydia and gonorrhea can be transmitted to the throat during oral sex, often completely asymptomatic — throat chlamydia/gonorrhea often goes undetected without routine testing, specifically a throat swab.
Herpes is easily transmitted in both directions — oral HSV-1 can cause genital infection, and vice versa.
HPV is also linked to oral and throat cancers — recent studies have shown that oral sex has become one of the main routes of transmission for HPV-associated throat cancer.
Syphilis can manifest as ulcers in the mouth if the initial contact occurred in the mouth.
The risk of HIV transmission through oral sex is significantly lower than vaginal/anal contact, but cannot be completely ruled out, especially if there are cuts, bleeding gums, or open sores in the mouth.
Barrier protection options
Condom — Useful during oral sex on the penis, reducing direct contact with mucous membranes.
Dental dam — A thin, latex or polyurethane sheet used as a barrier over the vulva or anus during oral sex. It can also be made by cutting up a regular condom.
Common Mistake: "Nothing is transmitted orally"
This is one of the most common and dangerous misconceptions — despite the relatively low risk for some infections, oral sex is not a completely safe activity, and it should be included in the full panel if screening is performed.
Limitations of visual inspection
Many people assume that "if nothing is visible, everything is safe" — however, as mentioned above, many infections (including chlamydia, gonorrhea, early HPV) are completely asymptomatic and are visually unnoticeable even to the partner.
Practical tips
- Openly discuss your testing status with a new partner, even before oral sex, not just before penetrative contact.
- Using barrier methods in new or non-monogamous relationships, even for oral sex.
- Oral hygiene — Refrain from brushing your teeth immediately before oral sex (small cuts on the gums increase the risk), but maintain normal hygiene.
Open discussion of infection status
The downplaying of the risks of oral sex often leads to it not being considered "real sex" at all in conversations about testing and safety — an attitude worth reconsidering, because reducing risk, not denying it, is a realistic and healthy approach.