Fig. 1. Differential effects of eight types of ginseng on postprandial plasma glucose: The line plots and bars in the array represent the incremental change and area under the curve (AUC) for the mean of two identical placebos (•) or one of eight of the most popular ginseng types, Sanchi, Siberian, American, Asian, Asian-red, Japanese-rhizome, American-wild, or Vietnamese [wild] ginseng, () administered at a dose of 3 g 40-min before a 75g-OGTT in 12 healthy nondiabetic subjects (sex: 6m:6f, age: 34 ± 3 y, BMI: 25.8 ± 1.2 kg/m²). Asterisks indicate that points or bars for ginseng are significantly different from placebo (p < 0.05, one-way repeated measures ANOVA with non-orthogonal contrasts). AUC data were logarithmically transformed for statistical analyses to normalize their distribution. Data are mean ± SEM.