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NCI Seeks Toxicity Studies of Five Natural Substances

NCI Seeks Toxicity Studies of Five Natural Substances

 RESEARCH TRIANGLE PARK, NC—The National Toxicology Program is considering an NCI request that it do toxicity studies of four herbal products and a substance found in vegetables: aloe vera, used in cosmetics and as a dietary supplement; ginseng, promoted to increase vigor; kava kava, sold as a mood elevator; milk thistle, believed by some to prevent cancer and protect the liver; and indole-3-carbinol, which occurs in cruciferous vegetables, and, according to some evidence, may reduce cancer risk.

 
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