Questioning the safety of certain 'healthful' plant-based antioxidants

Scientists are calling for more research on the possibility that some supposedly healthful plant-based antioxidants -- including those renowned for their apparent ability to prevent cancer -- may actually aggravate or even cause cancer in some individuals. Their recommendation follows a study in which two such antioxidants -- quercetin and ferulic acid -- appeared to aggravate kidney cancer in severely diabetic laboratory rats.

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