นักวิจัยชี้ กุญแจสำคัญสำหรับการลดน้ำหนัก คือการรักษาระดับน้ำตาลในเลือดให้ต่ำไว้
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For years, nutritionists have tried to come up with a diet that will guarantee weight loss without fail. Mass production of low-fat or no-fat food varieties has not helped reduce the obesity problem in the United States, and various diets have worked for some people and not for others.