| http://www.w3.org/ns/prov#value | - More than half of American adults use supplements, most often multivitamins and minerals.Vitamins and HealthMany fresh fruits and vegetables contain chemicals that may fight cancer, including lung, breast, colon, and prostate cancers.Evidence shows that beta-carotene supplements can have harmful effects on smokers, increasing their risk for lung cancer and their overall death rates.
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