SOURCES: Nutrition Action Health Letter, July-August 2000. Journal of Nutrition, March 2002. Robert Eckel, MD, chairman, American Heart Association's Nutrition, Physical Activity and Metabolism Council; professor of medicine, University of Colorado Health Sciences Center, Denver. Bruce Fife, ND, Colorado Springs, Colo. Glenn S. Rothfeld, MD, MAc, clinical assistant professor of family medicine, Tufts University School of Medicine, Boston; medical director, WholeHealth New England, Arlington, Mass.

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