Since then, many studies have been undertaken to determine the impact of altering the blood glucose-raising potential (glycemic challenge) of the diet on a wide range of short- and long-term health outcomes.
However, evaluating the impact of a single dietary change on health is notoriously complex, and opinions on the relevance of GI, GL and GGE have been divided.
The presence of fat or soluble dietary fiber can slow the gastric emptying rate, thus lowering the glycemic response.
In general, foods with higher amounts of fiber and/or resistant starch have a lower glycemic response.
Unrefined wild plant foods like those available to contemporary foragers typically exhibit low glycemic indices.