PreventionBy Mayo Clinic staff
There's no certain way to prevent cancer. But doctors have identified several ways of reducing your cancer risk, such as:
- Stop smoking. If you smoke, quit. If you don't smoke, don't start. Smoking is linked to several types of cancer — not just lung cancer. Stopping now will reduce your risk of cancer in the future.
- Avoid excessive sun exposure. Harmful ultraviolet (UV) rays from the sun can increase your risk of skin cancer. Limit your sun exposure by staying in the shade, wearing protective clothing or applying sunscreen.
- Eat a healthy diet. Choose a diet rich in fruits and vegetables. Select whole grains and lean proteins.
- Exercise most days of the week. Regular exercise is linked to a lower risk of cancer. Aim for at least 30 minutes of exercise most days of the week. If you haven't been exercising regularly, start out slowly and work your way up to 30 minutes or longer.
- Maintain a healthy weight. Being overweight or obese may increase your risk of cancer. Work to achieve and maintain a healthy weight through a combination of a healthy diet and regular exercise.
- Drink alcohol in moderation, if you choose to drink. If you choose to drink alcohol, limit yourself to one drink a day if you're a woman or two drinks a day if you're a man.
- Schedule cancer screening exams. Talk to your doctor about what types of cancer screening exams are best for you based on your risk factors.
- Ask your doctor about immunizations. Certain viruses increase your risk of cancer. Immunizations may help prevent those viruses, including hepatitis B, which increases the risk of liver cancer, and human papillomavirus (HPV), which increases the risk of cervical cancer and other cancers. Ask your doctor whether immunization against these viruses is appropriate for you.
- Deaths and mortality. Centers for Disease Control and Prevention. http://www.cdc.gov/nchs/fastats/deaths.htm. Accessed April 17, 2012.
- Cancer: All sites. Surveillance Epidemiology and End Results. http://seer.cancer.gov/statfacts/html/all.html. Accessed April 17, 2012.
- What you need to know about cancer. National Cancer Institute. http://www.cancer.gov/cancertopics/wyntk/cancer/allpages. Accessed April 17, 2012.
- Kleinsmith LJ, et al. Understanding cancer. National Cancer Institute. http://nci.nih.gov/cancertopics/understandingcancer/cancer. Accessed April 17, 2012.
- Abeloff MD, et al. Abeloff's Clinical Oncology. 4th ed. Philadelphia, Pa.: Churchill Livingstone Elsevier; 2008. http://www.mdconsult.com/das/book/body/208746819-4/0/1709/0.html. Accessed April 17, 2012.
- Ulcerative colitis. National Institute of Diabetes and Digestive and Kidney Diseases. http://digestive.niddk.nih.gov/ddiseases/pubs/colitis/index.htm. Accessed April 17, 2012.
- NINDS paraneoplastic syndromes information page. National Institute of Neurological Disorder and Stroke. http://www.ninds.nih.gov/disorders/paraneoplastic/paraneoplastic.htm. Accessed April 17, 2012.
- Deng GE, et al. Evidence-based clinical practice guidelines for integrative oncology: Complementary therapies and botanicals. Journal of the Society for Integrative Oncology. 2009;7:85.
- Kushi LH, et al. American Cancer Society guidelines on nutrition and physical activity for cancer prevention: Reducing the risk of cancer with healthy food choices and physical activity. CA: A Cancer Journal for Clinicians. 2012;62:30.