Will This Drug End Obesity?

Its discoverer calls it "leptin," from the Greek leptos, meaning thin. Other researchers call it "OB-statin," which translates as "obesity stopper." Amgen Inc., which holds the drug's exclusive rights, hasn't decided what to call it. But for the one in three Americans who is overweight--and for millions more who simply want to shed a few--it's a weight-loss wonder drug.

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