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This was a phenomenally well-designed trial.

这是一项设计得极为出色的试验。

People did change their diets according to their group assignment. Those in the low-fat group consumed, on average, 29 percent of their calories from fats, versus 45 percent in the low-carbohydrate group. Those in the low-carbohydrate group consumed 30 percent of their calories from carbohydrates, versus 48 percent in the low-fat group.

人们的确会根据分组改变自己的饮食。低脂组的人消耗的热量平均29%来自脂肪，低碳水组的人45%的热量来自脂肪。低碳水组消耗的热量30%来自碳水化合物，低脂组48%的热量来自碳水化合物。

They did not, however, lose meaningfully different amounts of weight. At 12 months, the low-carbohydrate group had lost, on average, just over 13 pounds, compared with more than 11.5 pounds in the low-fat group. The difference was not statistically significant.

然而，他们的体重减少并没有什么实质性的不同。在12个月时，低碳水组平均只减了13磅多一点，对比低脂组减少了超过11.5磅。该差异没有统计学意义。

Insulin sensitivity didn’t make a difference. People who secreted more or less insulin lost no more or less weight in general on either a low-fat or low-carbohydrate diet. Genetics didn’t make a difference either. People who had genes that might indicate that they would do better on one diet or the other didn’t.

胰岛素敏感性并没有影响。人们分泌的胰岛素不论多少，在低脂或低碳水饮食中的减重差别都不大。基因也没什么差别。一些人有的基因可能意味着他们会在某类饮食中表现更好，而在另一种饮食中则没那么好。