title: Physical activity and the primary prevention of cancer.
abstract: Evidence has been accumulating that suggests that physical activity may help reduce the risk of cancer. Physically active people have been shown to have a decreased rate of all-cancer mortality. The incidence of colon, breast, and perhaps prostate cancer are decreased in more active people when compared with their sedentary peers. Chronic physical activity may decrease tumor risk by its effect on natural immunity, antioxidant defenses, improved energy balance, hormonal changes, or by other unknown mechanisms.
authors.affiliation: Department of Family Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109-0707, USA.
authors.forename: R B
authors.initials: RB
authors.lastname: Kiningham
mesh_terms: D001943:Breast Neoplasms / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control*; D003110:Colonic Neoplasms / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control*; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D011322:Primary Prevention / Q000379:methods*; D011471:Prostatic Neoplasms / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control*; D012107:Research Design / Q000592:standards; D012307:Risk Factors