改善健康也许很简单:每天少吃300卡_BEC初级作文

改善健康也许很简单:每天少吃300卡

但新研究在多个方面都有开创性。研究完全由NIH资助，耗资5500万美元，全名为“Calerie”——降低能量摄入长期效应综合评估(Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy)。这是以体重正常或轻微超重但不肥胖的青壮年为对象，检验卡路里摄入限制影响的首例主要临床试验。试验旨在查看热量限制能否影响健康老龄化进程和疾病状况。

While the calorie target they set was steep, they did give the subjects some flexibility, allowing them to eat the foods that they wanted. What they found was that the subjects did not change their protein intake, but they did eat significantly less fat and slightly fewer carbohydrates. They also consumed more micronutrients like vitamins A, K and magnesium, indicating a big increase in fruits and vegetables, said Susan B. Roberts, a co-author of the study and a senior scientist at the U.S.D.A. Human Nutrition Research Center on Aging at Tufts University.

虽然他们设定的卡路里目标非常严格，但也给了受试者一些灵活性，让他们可以吃自己想吃的食物。他们发现，研究对象的蛋白质摄入量并没有改变，但他们摄入的脂肪和碳水化合物明显减少。研究报告作者之一、塔夫茨大学USDA人类衰老营养研究中心(Tufts University U.S.D.A. Human Nutrition Research Center on Aging)资深科学家苏珊·B·罗伯茨(Susan B. Roberts)说，受试者还摄入了维生素A、K和镁等更多微量元素，表明水果和蔬菜的摄入量有了大幅增加。