what is the glycemic index (gi)?
<answer> The Glycemic Index is a relative ranking of carbohydrate in foods according to how they affect blood glucose levels. <context> The Glycemic Index (GI) is a relative ranking of carbohydrate in foods according to how they affect blood glucose levels. Carbohydrates with a low GI value (55 or less) are more slowly digested, absorbed and metabolised and cause a lower and slower rise in blood glucose and, therefore insulin levels. August 2017 GI News. In this issue we look at fake news about food and health and how to counter it.