A study that has implications for type 2 diabetes research finds that eating three low-carb meals within 24 hours lowered insulin resistance by more than 30 per cent.
一份2型糖尿病研究发现，24小时内进食3餐低糖饮食可能降低30%的胰岛素抵抗。
This new study, conducted by the University of Michigan, also found that high-carb meals sustain insulin resistance, the cause of prediabetes and type 2 diabetes.
这项新的研究，是由密歇根大学进行的，该研究发现高糖饮食导致胰岛素抵抗，是引起前驱糖尿病和2型糖尿病的原因。
Michigan researchers wanted to assess the involvement of dietary carbohydrate, especially when timed after exercise, and how this affected four groups of eight metabolically healthy weight-matched postmenopausal women.
密歇根的研究人员想对涉及碳水化合物的饮食进行评估，特别是针对运动后的时期，以及其影响机制，分别对四组8名代谢健康且体重匹配的绝经后妇女进行研究。
The women were divided into four groups and given meals of either 30 or 60 per cent carbohydrates with or without moderate-intensity exercise beforehand. The low-and high-carb meals had the same calorie counts.
这些女性分为4组，分别给予含30%和60%碳水化合物的餐食，事先分别进行或不进行中等强度的运动。低糖饮食和高糖饮食中含有相同的卡路里摄入量。
Researcher Katarina Borer reported that the low-carb group showed a reduction in insulin resistance after the third meal in the evening; the high-carb group experienced sustained high post-meal insulin.
研究员Katarina Borer报道，在晚餐之后，进行低糖饮食的小组表现出胰岛素抵抗的降低，高糖饮食小组表现出高餐后胰岛素水平。
She explained the meals fed to the high-carb group were in line with the 45-to-65 per cent daily carbohydrate intake recommended by dietary guidelines in the US.
她解释道，高糖饮食小组的餐食中含有45-65%的每天碳水化合物量，这是美国饮食指南中所推荐的。
“We showed an acute, one-day reduction in insulin resistance after the third low-carbohydrate meal eaten in the evening, so one could argue that this is transient and insignificant,” Borer said.
Borer说，“在一天进行了3餐低糖饮食之后，晚上测得明显的胰岛素抵抗降低，可能有人会认为这是短暂性的变化，是不具有意义的。”
“But at least two other studies where high-carbohydrate meals were fed to volunteers for five and for 14 days show that the outcome was worrisome.
“但是，至少有两项其他的研究表明，给受试者进行5天和14天的高糖饮食后，结果是令人堪忧的。”
“These subjects developed increased fasting insulin secretion and insulin resistance, increased glucose release by the liver which produced high blood sugar, and dramatically lowered fat oxidation that contributes to obesity. These then were more persistent effects that could be a path to prediabetes and diabetes.”
“这些受试者具有空腹胰岛素分泌增多、胰岛素抵抗、肝脏释放血糖增加的情况，以及脂肪氧化减缓，这会导致肥胖。长年累月之后，这些因素最后会导致前驱糖尿病和糖尿病。
Furthermore, exercise did not lower insulin resistance in either group, so the findings suggest that the insulin reaction was driven by the effect of carbohydrate. But Borer added that this doesn’t mean exercise doesn’t influence insulin action.
另外，无论是高糖还是低糖饮食组，运动都未能降低胰岛素的抵抗，因此，研究发现提示，胰岛素的反应受碳水化合物的影响。但是，Borer补充说，这并不代表运动不会影响胰岛素的情况。
原文作者：Jack Woodfield
原文标题：Low-carb diet outperforms high-carb diet in lowering insulin resistance, study reports
文章链接：http://www.diabetes.co.uk/news/2016/nov/low-carb-diet-outperforms-high-carb-diet-in-lowering-insulin-resistance,-study-reports-93633093.html
发表期刊：PLOS ONE杂志