The glycemic index (GI) is used to rank carbohydrate-containing foods according to their effect on blood glucose levels after eating. Low GI foods are slowly digested and absorbed and so produce only small fluctuations in blood glucose and insulin levels. By contrast, high GI foods are rapidly digested and absorbed, producing a more pronounced fluctuation in blood glucose levels.
Source: Glycemic Index Foundation http://www.gisymbol.com/about/glycemic-index/
The glycemic index (GI) ranks carbohydrates on a scale from 0 to 100 as follows:
- Low GI foods = GI less than 55
- Medium GI foods = GI between 55 and 70
- High GI foods = GI greater than 70
Health Benefits of a low GI diet
- Reduced insulin levels and insulin resistance.
- Increase HDL cholesterol and reduces LDL cholesterol.
- Protects against cardiovascular disease by reducing inflammation.
- Reduced risk of some cancers by reducing insulin levels.
- Lowers abdominal fat (low GI increases insulin sensitivity which allows you to burn more fat as a fuel source and process your carbohydrates more efficiently).
While low GI is useful when choosing carbohydrate foods it is not necessary to eat only low GI foods to achieve a low GI diet to assist blood glucose control.
- Eating a variety of intact grains, legumes and low GI grain foods lowers the overall GI of your diet.
- Most legumes such as chickpeas, beans, peas are a source of low GI carbohydrate.
Using legumes to lower the GI of a meal