Glycemic index (GI) is a measurement of how fast blood glucose levels (I.e blood sugar) rise after eating certain types of foods. The effects that different foods have on blood glucose levels vary considerably.

Foods with a lower glycemic index suggest slower rates of digestion and release glucose more gradually into the bloodstream.

Foods with a higher glycemic index digest more quickly and release glucose more rapidly into the bloodstream.

Snickers (GI) 68

Apricot (GI) 34