The meal should be consumed within 15 minutes and blood samples will be taken from the cannula at 15, 30, 60, and 90 minutes and then at every hour for 6 hours after consumption of the meal to monitor changes in metabolic and inflammatory markers. Additional blood samples will be obtained at 2 and 6 hours post meal by venepuncture for analysis of inflammatory markers as there is evidence that the cannula can stimulate local inflammation which interferes with the true result.