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Exact dietary concentrations should be checked in the original methods before translating dose.\nexposure: Low-iron background with graded curcumin intake\nevidence_span: {\"source_cache\": \"artifacts/curcumin-research/18815282.abstract.txt\", \"locator\": \"Primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"37d4724833996e19b5dedff95a592acbfc5123f22cef97d14656b53a82666aa8\", \"start_char\": 0, \"end_char\": 1368, \"text_sha256\": \"37d4724833996e19b5dedff95a592acbfc5123f22cef97d14656b53a82666aa8\"}\n[curcumin-p18815282] Curcumin, a cancer chemopreventive and chemotherapeutic agent, is a biologically active iron chelator. 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