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From Discover Magazine | RSS:
A preliminary study has shown that large doses of vitamin C may decrease the effectiveness of chemotherapy drugs, bringing new confusion into the debate over whether vitamin C supplements can help or harm cancer patients. In the study, researchers treated cancer cells with very high doses of vitamin C and then tried to kill the cells with various cancer drugs; they found that all the drugs were less effective on the pretreated cancer cells than on cells that had received no vitamin dose.
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