
NEW YORK - MAY 2: Pedestrians pass by a General Nutritionj Center (GNC) May 2, 2003 in New York City. GNC, the nation's largest vitamin and supplement chain with 5, 300 retail stores, announced that it would stop selling products that include Ephedra, a weight-loss chemical that has been linked to numerous health problems. (Photo by Stephen Chernin/Getty Images)
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