但是,通过在一段时间内评估个人及其饮食习惯,近期的临床研究描绘出了一幅更为复杂的画面。有些研究提供了非常有力的证据显示,人们可以通过摄入较少的碳水化合物和较多的膳食脂肪——反式脂肪除外——来大幅度降低罹患心脏疾病的风险。这些新的发现说明,这种做法能更有效地减少体脂,并同时减轻体重。
The new study was financed by the National Institutes of Health and published in the Annals of Internal Medicine. It included a racially diverse group of 150 men and women — a rarity in clinical nutrition studies — who were assigned to follow diets for one year that limited either the amount of carbs or fat that they could eat, but not overall calories.
这项新研究由美国国立卫生研究院(National Institutes of Health)出资,成果发表在了《内科学年鉴》(Annals of Internal Medicine)上。调查对象包括各个族裔的150名男女——这在临床营养研究中并不多见。按照指派的结果,这些人必须在一年内遵守限制碳水化合物或脂肪摄入量的饮食要求,但无需限制总体的卡路里摄入量。
“To my knowledge, this is one of the first long-term trials that’s given these diets without calorie restrictions,” said Dariush Mozaffarian, the dean of the Friedman School of Nutrition Science and Policy at Tufts University, who was not involved in the new study. “It shows that in a free-living setting, cutting your carbs helps you lose weight without focusing on calories. And that’s really important because someone can change what they eat more easily than trying to cut down on their calories.”
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