Orange juice naturally contains high concentrations of hesperidin, which affects glucose absorption in in vitro experiments. This study is to test if hesperidin and other components of orange juice (not other sugars or organic acids) affect the post-prandial blood glucose concentration derived from sugars already present in the orange juice.

Healthy volunteers will consume orange juice with added water or food-grade hesperidin.

Inclusion Criteria:

• fasting blood glucose below 5.9 mM

Exclusion Criteria:

• fasting glucose above 6 mM pregnant