When evaluating the percent change of insulin sensitivity, 67% of the participants (10 of 15) randomized to the blueberry group had at least a 10% or greater favorable change in insulin sensitivity, whereas only 41% of the placebo participants (7 of 17) demonstrated this change (Fig. 1). The mean change in insulin sensitivity was improved significantly more in the blueberry group compared to the placebo group (Fig. 2). Also, the percent change in insulin sensitivity was greater in the blueberry group (22.2 ± 5.8%) than in the placebo group (4.9 ± 4.5%) (P = 0.02).