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Holden Comprehensive Cancer Center
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Cancer Prevention: What You Need To Know Exercise and Cancer PreventionPeer Review Status: Internally Reviewed by Cancer Center StaffCreation Date: 1996 Last Revision Date: November 2006 What Is Known About This Topic? Exercise and other forms of physical activity have proven health benefits. It has been shown to both prevent disease and promote health and well-being. There is strong data to show that high levels of physical activity are linked with lower rates of colon and breast cancer. There is also proof that moderate* to vigorous exercise** can help prevent prostate and possibly lung and uterine cancer. Several recent studies have shown that after breast or colon cancer has been treated, exercise may help to prevent cancer from returning. The ways physical activity may prevent cancer are not clear. Exercise can help reduce obesity and prevent weight gain. These two factors are related to the cause of several cancers. It can also change the body's hormone levels. This may also have a good effect. Exercise, by speeding up metabolism, is believed to speed up the passage of digested foods through the colon. This reduces the time the colon lining is in contact with possible cancer causing chemicals. Finally, those who engage in high levels of exercise are much less likely to smoke cigarettes. Smoking is the single most important cause of cancer. Whatever the means, there is enough proof to advise for regular physical activities and exercise programs. It improves general well-being. Exercise decreases disability. It prevents cancer, heart disease, diabetes and other common medical conditions. Most expert advise that for cancer prevention at least 30 minutes of moderate to brisk exercise is needed. It should be done on 5 or more days per week. Some job and leisure activities may be included in this category. When starting a new exercise program, it is best to first talk with your doctor. There is still more to learn about exercise and cancer prevention. Research continues on many areas such as the amount of exercise needed and which cancers are affected by exercise.
*Moderate physical activity: Activities that use large muscle groups and are at least equal to brisk walking.
**Vigorous physical activity: rhythmic, repetitive physical activities that use large muscle groups at 70% or more of maximum heart rate for age. Maximum heart rate equals roughly 220 beats per minutes minus age.
Where Can I Get More Information? University of Iowa Resources
Other Resources If you would like more information about exercise and cancer prevention or to obtain phone numbers to the above organizations, please contact the Cancer Information Service (1-800-237-1225) or e-mail: cancer-information@uiowa.edu. |
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