The glycemic index is a value assigned to foods that contain carbohydrates. It is based on how slowly or quickly those foods cause increases in blood glucose levels.

Exercise helps lower blood sugar levels by increasing insulin sensitivity, which allows the body to use more glucose in the blood for energy.

Foods with a low glycemic index aren't always healthy. For example, potato chips have a lower glycemic index than oatmeal, but oatmeal is healthier.

The glycemic index measures how much a food increases your blood sugar compared to pure glucose. Foods with a high glycemic index can make it difficult to control diabetes, while foods with a lower glycemic index can help you manage your diabetes.

Studies have shown that a high glycemic index diet can be a risk factor for depression, and that there is a relationship between mood and blood sugar.