[摘要]：There is considerable interest it) the impact of (n-3) long-chain Pi in. mitigating the. morbidity and mortality caused by chronic diseases. In 2002, the Institute of Medicine Concluded that insufficient data wore available to define Dietary Reference Intakes {DRI} for eicosapentaenoic acid (EPA) or docosahexaenoic acid (DHA), noting only that EPA and DHA could contribute tip to 10% toward meeting the Adequate Intake for alpha-linolenic acid. Since then, substantial new evidence has emerged supporting the need to reassess this recommendation. Therefore, the Technical Committee on Dietary Lipids of the International Life Science, Institute North America sponsored a workshop on 4-5 June 2008 to consider whether the body of evidence specific to the major chronic diseases in the United Stales-coronary heart disease (CHD), cancel, and cognitive decline-had evolved sufficiently to justify reconsideration of DRI for EPA+DHA. The workshop participants arrived at these conclusions: 7) consistent evidence from multiple research paradigms demonstrates a clear, inverse relation between EPA+DHA intake and risk of fatal (and possibly nonfatal) CHID, providing evidence that supports a nutritionally achievable DRI for EPA+DHA between 250 and 500 mg/d; 2) because of the demonstrated low conversion from dietary ALA, protective tissue levels of EPA+DHA car be achieved only through direct consumption of these fatty acids, 3) evidence of beneficial effects of EPA + DHA on cognitive decline are emerging but are riot yet sufficient to support an Intake level different from that needed to achieve CHD risk reduction; 4) EPA+DHA do not appear to reduce risk for cancer, and 5) there is no evidence that intakes of EPA + DHA in these recommended ranges are harmful.. J. Nutr. 139 804S-819S, 2009.
