A randomised, controlled, double-blind, cross-over study will be conducted. Subjects will receive combined blackcurrant and apple polyphenols, apple polyphenols only or placebo in random order at 3 separate study visits immediately before a high-carbohydrate meal. Seven days wash-out period will be required between study days.Standardised diet and exercise advice will be given prior to the visit. Subjects will arrive on each study visit between 09.00 and 10.00 h, after a 12 h overnight fast. They will then be cannulated in a forearm vein and baseline fasting blood samples will be taken in duplicate. All test drinks will be blended to be equal in volume, macronutrient and energy content. Fruit extracts instead of whole fruits will be administered to avoid the confounding effect of fruit fibre/viscosity on gastric emptying rate. Following consumption of the test drink, the high carbohydrate meal (starch and sucrose) will be served (white bread with apricot jam). Outcome variables will be measured postprandially until 120 min post-meal.