6. Curb alcohol consumption: Alcohol consumption increases the risks of cancers of the mouth, pharynx, larynx, esophagus, liver, colon and rectum. Women should limit themselves to no more than one alcoholic beverage a day. Men should have no more than two.

7. Limit exposure to radiation: Ultraviolet (UV) radiation, which comes from the sun, sunlamps or commercial tanning beds, is the primary cause of skin cancer, the most common of all cancers.

8. Protect against infection: Infections caused by viruses are recognized as risk factors for several types of cancer. Human papillomavirus (HPV), a sexually transmitted disease, is the most common cause of cervical cancer. Chronic hepatitis B and hepatitis C increase the risk of liver cancer. They are most often spread through contact with contaminated blood, from contaminated needles or by having unprotected sex. Human immunodeficiency virus (HIV), the virus that causes AIDS, also increases the risk of several types of cancer. It's most commonly transmitted by unprotected sex or sharing of needles.

9. Consider chemoprevention: Chemoprevention is the use of natural or synthetic compounds to reduce the risk of cancer or its recurrence. Tamoxifen, prescribed to prevent breast cancer in high-risk women, is the best known chemoprevention agent. A caution: chemoprevention drugs can have serious side effects.

10. Get recommended screening exams: Pap tests, mammograms, colonoscopies and other routine screenings can't prevent cancer. But screenings can help find cancers early, when treatment is most likely to be successful.

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