Human papillomavirus, commonly known as HPV, is one of the most common sexually transmitted infections. It is so common that many people will encounter at least one type of HPV during their lifetime, often without ever knowing it. Most HPV infections cause no symptoms and clear naturally within two years. However, some types can persist and contribute to health problems, including certain cancers and genital warts.
Understanding what increases your risk does not mean if someone with HPV has made poor choices. HPV can be passed between partners even when neither person has symptoms. A person can also have an infection for some time without knowing when or from whom they acquired it.
So, what everyday circumstances can make HPV infection more likely? Here is what you should know.
Sexual contact is the main route of HPV exposure
The biggest factor associated with genital HPV infection is sexual contact. HPV can spread through vaginal, anal or oral sex, as well as through intimate skin-to-skin contact involving the genital area. Penetration is not necessary for transmission.
This is important because people sometimes associate sexually transmitted infections only with unprotected intercourse. HPV does not work quite that way. Since the virus can infect areas of skin that are not covered by a condom, condoms and other barrier methods can reduce the risk but cannot eliminate it.
A person can also carry HPV without visible warts, discomfort or any other obvious sign. This makes HPV transmission possible between partners who believe there is no infection to pass on.
Having a new sexual partner can increase exposure
Having a new sexual partner is recognised as a risk factor for acquiring a new HPV infection. This does not mean that a new partner has HPV or that either person has been unfaithful. It simply reflects the fact that a new sexual relationship can introduce exposure to HPV types that a person has not encountered previously.
The number of lifetime or recent sexual partners is also associated with a higher likelihood of HPV infection. Each new sexual partnership can create another opportunity for exposure because HPV is common among sexually active people.
At the same time, having had only one sexual partner does not make someone immune to HPV. A person can acquire HPV from a single partner, even when the relationship is long term.
Starting sexual activity at a younger age
Research has identified younger age at sexual initiation as a possible factor associated with HPV infection, although the strength of this association varies across studies.
The reason is not that young people are inherently more likely to contract an infection. Rather, HPV exposure can occur soon after sexual activity begins, and biological factors may also influence susceptibility during adolescence.
The practical point is straightforward: HPV prevention is relevant from the beginning of sexual activity, rather than only after someone has had several partners.
Having a partner with previous sexual partners
You do not need to have multiple partners yourself to encounter HPV. Your partner’s previous sexual exposure can also be relevant.
For example, someone may enter a new relationship after having had previous partners. If they carry HPV without knowing it, the virus can be passed to their current partner. Since HPV often causes no symptoms, there may be no obvious indication that an infection is present.
This is one reason judging someone’s HPV risk based simply on their current relationship status can be misleading.
A weakened immune system can make a difference
The immune system plays an important role in controlling HPV infections. Most infections are cleared naturally, but people with weakened immune systems may have greater difficulty fighting off HPV and can be more likely to experience HPV-related health problems.
Conditions that suppress immune function, including HIV infection, can therefore be important risk factors. Certain medicines or medical treatments that suppress the immune system may also affect the body’s ability to control infections.
This is slightly different from the factors that increase the chance of initially acquiring HPV. Immune suppression is particularly relevant because it can make it harder for the body to clear an infection once it occurs.
Smoking can affect the body’s ability to clear HPV
Smoking is another factor worth paying attention to. Among people with HPV, smoking may interfere with the immune system’s ability to clear the infection.
This does not mean that every smoker with HPV will develop persistent infection or an HPV-related disease. It means smoking is one factor associated with poorer control of HPV infection and certain HPV-related health outcomes.
For someone concerned about HPV, avoiding tobacco is therefore a sensible part of overall health and prevention.
Other sexually transmitted infections may matter
Having another sexually transmitted infection can also be relevant when considering HPV and cervical health. Some evidence suggests that co-infections may influence the persistence or progression of HPV-related disease.
This is another reason sexual health should be considered rather than focusing on one infection in isolation. Testing and appropriate treatment for other sexually transmitted infections can be an important part of routine sexual healthcare.
Oral sex is not risk-free
HPV is not limited to the genital area. Oral sexual contact can expose the mouth and throat to HPV. Certain HPV types are associated with cancers of the oropharynx, which includes parts of the throat and the base of the tongue and tonsils.
That does not mean that oral sex automatically leads to HPV infection or cancer. It simply means that HPV can be transmitted through different forms of intimate sexual contact, which is why prevention should not focus exclusively on vaginal intercourse.
HPV can happen without obvious symptoms
The most important risk factor to understand is exposure itself. HPV frequently causes no noticeable symptoms. Someone may feel completely healthy while carrying the virus and may pass it to a partner without knowing.
Genital warts can occur with some HPV types, but the types that cause warts are different from the high-risk types associated with cancer. The absence of warts therefore does not mean that HPV is absent.
This also explains why it can be difficult to determine exactly when an HPV infection was acquired. Symptoms or an abnormal screening result may appear long after the original exposure.
What does not increase your HPV risk?
It is just as useful to understand what HPV does not typically spread through.
HPV is not considered an infection acquired through casual everyday contact such as sharing food, sitting beside someone or shaking hands. Genital HPV is primarily associated with intimate sexual contact and direct skin-to-skin contact involving infected areas.
An HPV diagnosis should therefore not become a reason to avoid or stigmatise someone. It is a common infection, and having HPV does not tell you anything about a person’s character, hygiene or relationship choices.
Reducing your risk starts with practical steps
You cannot remove every possibility of HPV exposure, but several measures can reduce your risk of infection and HPV-related disease.
HPV vaccination is one of the most effective preventive measures because it can prevent infection with the HPV types covered by the vaccine. It does not treat an existing HPV infection.
Using condoms and dental dams can also lower the likelihood of transmission, although they cannot provide complete protection because HPV can infect skin outside the areas they cover.
For eligible people, following recommended cervical screening schedules is equally important. Screening does not prevent HPV infection, but it can identify HPV or abnormal cervical cell changes early, allowing appropriate follow-up.
Avoiding tobacco is another practical step, particularly because smoking can make it harder for the body to clear HPV.
Conclusion
HPV is common, and many infections resolve without causing health problems. Having a risk factor does not mean that a person will develop persistent HPV, genital warts or cancer. Likewise, someone without obvious risk factors can still acquire HPV.
The useful approach is not to look for someone to blame. It is to understand how HPV spreads, recognise situations that can increase exposure, take preventive measures where possible and stay up to date with appropriate screening.
When people understand the realities of HPV transmission, conversations about sexual health become less about fear and more about informed choices. That is the goal of knowing your risk: not to worry about every interaction, but to know which precautions genuinely matter.