Causes, Symptoms, and Prevention
1. What Is Cervical Cancer?
Cervical cancer develops in the cervix, the lower part of the uterus that connects to the vagina. It usually develops slowly over many years, often beginning with abnormal cell changes that can be detected and treated before cancer develops.
The good news is that cervical cancer is one of the most preventable cancers through HPV vaccination and regular cervical cancer screening.
2. What Causes Cervical Cancer?
The primary cause of cervical cancer is a persistent infection with certain high-risk types of human papillomavirus (HPV).
HPV is a very common virus that spreads through intimate skin-to-skin sexual contact. Most HPV infections clear naturally within a couple of years without causing health problems. However, when high-risk HPV infections persist, they can lead to changes in cervical cells that may develop into cancer over time.
The HPV types most commonly linked to cervical cancer are HPV-16 and HPV-18.
3. Factors That Can Increase Risk
While HPV infection is necessary for nearly all cervical cancers, certain factors may increase the likelihood that an HPV infection will persist or progress.
These include:
- Persistent infection with high-risk HPV
- Not receiving the HPV vaccine when eligible
- Smoking or tobacco use
- A weakened immune system (such as from HIV infection or certain medications)
- Not having recommended cervical cancer screening
- Long-term use of certain medications that suppress the immune system
- Having multiple sexual partners or a partner who has had multiple partners, which can increase the chance of HPV exposure
Important: Having multiple sexual partners does not cause cervical cancer by itself. The underlying cause is persistent infection with high-risk HPV.
4. Symptoms of Cervical Cancer
Early cervical cancer often causes no symptoms, making routine screening especially important.
As the disease progresses, symptoms may include:
- Unusual vaginal bleeding between periods
- Bleeding after sexual intercourse
- Bleeding after menopause
- Heavier or longer menstrual periods than usual
- Unusual vaginal discharge, especially if it is persistent or foul-smelling
- Pelvic pain
- Pain during sexual intercourse
These symptoms can have many causes besides cervical cancer, but they should always be evaluated by a healthcare professional.
5. How to Help Prevent Cervical Cancer
Several evidence-based measures can greatly reduce the risk of cervical cancer.
Prevention strategies include:
- Receiving the HPV vaccine according to local recommendations
- Having regular Pap tests and/or HPV tests as recommended for your age and health history
- Practicing safer sex, including condom use (although condoms reduce—but do not eliminate—HPV transmission)
- Avoiding smoking and tobacco products
- Supporting overall health with a balanced diet, regular exercise, and adequate sleep
6. Why Early Detection Matters
Routine cervical cancer screening can detect abnormal cervical cells before they become cancer.
When cervical cancer is found early, treatment is often highly effective, and outcomes are generally much better than when it is diagnosed at a later stage.
Follow your healthcare provider’s recommendations for screening based on your age, medical history, and individual risk factors.
7. Final Note
Cervical cancer is one of the most preventable forms of cancer. HPV vaccination, routine screening, and prompt evaluation of abnormal symptoms are the most effective ways to reduce risk.
If you have questions about HPV vaccination, cervical cancer screening, or symptoms, talk with a licensed healthcare professional.