Lund University, Skåne University Hospital, Lund University, Malmö, Sweden.
Nutr J. 2010 Nov 30;9:63. doi: 10.1186/1475-2891-9-63.
Results of epidemiological studies have suggested that consumption of green tea could lower the risk of type 2 diabetes. Intervention studies show that green tea may decrease blood glucose levels, and also increase satiety. This study was conducted to examine the postprandial effects of green tea on glucose levels, glycemic index, insulin levels and satiety in healthy individuals after the consumption of a meal including green tea.
The study was conducted on 14 healthy volunteers, with a crossover design. Participants were randomized to either 300 ml of green tea or water. This was consumed together with a breakfast consisting of white bread and sliced turkey. Blood samples were drawn at 0, 15, 30, 45, 60, 90, and 120 minutes. Participants completed several different satiety score scales at the same times.
Plasma glucose levels were higher 120 min after ingestion of the meal with green tea than after the ingestion of the meal with water. No significant differences were found in serum insulin levels, or the area under the curve for glucose or insulin. Subjects reported significantly higher satiety, having a less strong desire to eat their favorite food and finding it less pleasant to eat another mouthful of the same food after drinking green tea compared to water.
Green tea showed no glucose or insulin-lowering effect. However, increased satiety and fullness were reported by the participants after the consumption of green tea.
NCT01086189.
流行病学研究的结果表明，饮用绿茶可能降低 2 型糖尿病的风险。干预研究表明，绿茶可能降低血糖水平，同时增加饱腹感。本研究旨在检验餐后饮用绿茶对健康个体餐后血糖水平、血糖指数、胰岛素水平和饱腹感的影响，这些个体在饮用包括绿茶的餐后餐。
该研究在 14 名健康志愿者中进行，采用交叉设计。参与者随机分为 300 毫升绿茶或水。这与白面包和切片火鸡组成的早餐一起食用。在 0、15、30、45、60、90 和 120 分钟时抽取血样。参与者在同一时间完成了几种不同的饱腹感评分量表。
与饮用含绿茶的餐相比，饮用含绿茶的餐 120 分钟后血浆葡萄糖水平更高。血清胰岛素水平或葡萄糖和胰岛素的曲线下面积无显著差异。与水相比，受试者报告饮用绿茶后饱腹感明显增加，对自己喜欢的食物的食欲减弱，再吃一口同样的食物感觉不那么愉快。
绿茶对血糖或胰岛素没有降低作用。然而，参与者在饮用绿茶后报告饱腹感和满足感增加。
NCT01086189。
