GI Find It Hard to Concentrate Lately

The glycemic index (GI) is a ranking given to a carbohydrate food on a scale of 0 to 100 to represent how quickly it is broken down to its simplest form, sugar, and absorbed into your blood stream.

The longer it takes for the body to break down the carbohydrate, the slower the sugar is released into the blood stream, and the longer your energy levels can be sustained.

Foods that are high GI are those which are rapidly digested and absorbed into the blood stream and result in marked fluctuations in blood sugar levels. Low GI foods, by virtue of their slow digestion and absorption, produce gradual rises in blood sugar and insulin levels, and have proven benefits for health.

Low GI diets have been shown to improve both glucose and lipid levels in people with diabetes (type 1 and type 2). They also have benefits for weight control because they help control appetite and delay hunger.

The glycemic effect of foods depends on a number of factors:

• The type of starch, physical entrapment of the starch molecules within the food
• Fat and protein content of the food and organic acids or their salts in the meal.
• Presence of fat or soluble dietary fibre can slow the gastric emptying rate, thus lowering the GI.

Large amounts of fat in foods tends to slow the rate of stomach emptying and therefore the rate at which foods are digested. The GI value of potato chips or french fries for example is lower than that of baked potatoes, yet the saturated fat in these foods will contribute to a much increased risk of heart disease. So it is therefore important to look at the type of fat in foods as well as GI values.

The glycemic index is important for weight maintenance due to the impact is has on your hunger levels through blood sugar control. As low GI foods maintain low blood sugar levels, you can easily control your hunger levels.

Low GI carbohydrate foods are often more nutritious as they can be higher in fibre, vitamins and minerals.