Bladder cancer?

May 14 2025, 2 min reading time

Unprotected oral sex can transmit more than just harmless infections—including HPV, which is linked to throat cancer. Read here why protection is also important during licking and blow jobs.

Many people associate sexually transmitted infections (STIs) with vaginal or anal sex—but serious diseases can also be transmitted through oral sex . And yes, even cancers of the mouth and throat .

HPV & throat cancer: The underestimated connection

Human papillomaviruses (HPV) are the most common sexually transmitted virus worldwide. Certain HPV strains—particularly HPV 16—can enter the mouth and throat during unprotected oral sex. Studies show that these virus types are associated with an increased risk of cancer of the throat, pharynx, or tongue .

HPV is often asymptomatic – meaning that many people carry the virus without knowing it.

Further risks of oral sex

In addition to HPV, other infections can also be transmitted through licking or blowing:

• Chlamydia

• syphilis

• Genital herpes

• Gonorrhea (clap)

• Pubic lice & scabies

The risk increases especially when partners change.

How do you protect yourself?

• Condom during blowjobs – protects against direct contact with semen and mucous membranes

• Dental dam during oral sex on the vulva or anus – the female equivalent of a condom

• HPV vaccination – recommended for all genders, ideally before first sex

• Regular check-ups – also available at the gynecologist or urologist

💡 Conclusion

Oral sex is often considered "safer" – but it's only safe with protection. Condoms and dental dams are simple ways to protect yourself from viruses like HPV. They not only protect you from infections, but also from potential long-term consequences like cancer.

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