Fasting glucose and insulin levels, and oral glucose tolerance. Levels of glucose (a), insulin (b), in fasted plasma and serum samples, respectively, taken at baseline (start), after 14 days of supplement (end), and one week (wash out (WO) week 1) and four weeks (WO week 4) after discontinuation of supplement. Significant changes between start and end (n = 21) and start and WO (n = 13) are indicated by P-values. Oral glucose toleranse was measured at start and end of the experiment, blood glucose levels at baseline, 10, 30, 60, and 120 minutes after glucose ingestion are given (c). The area under the curve was calculated at start and end (d). All values are given as means with standard deviations, and significant changes between start and end (n = 21) are indicated by *p < 0.05.