Fat cravings may all be in your hand

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Researchers have discovered two naturally occurring brain proteins, one that increases the craving for fatty food and one that blocks it. Sarah Leibowitz at New York's Rockefeller University identified galanin, which triggers a craving for fat in rats. When blocked, dramatic weight loss is achieved. David York of Louisiana State University identified enterostatin, which when injected into animals, decreases fat craving, cutting fat intake by 50 to 80%. Testing on humans is expected to begin early this year, but it may be 10 years before experiments lead to a diet drug which wins the Food and Drug Administration's approval.

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