How long does the process of digestion last? Do you find yourself still hungry no matter how much you eat? If so, you might be eating foods that are too high on the glycemic index. It’s definitely something worth knowing if you’re struggling with excess weight.

The glycemic index is a system of values given to foods according to how quickly they cause an increase in blood glucose levels. To put that in layman’s terms, it basically measures how fast different foods are digested by the body. Glucose is a simple sugar that gives your body energy, and you get it from the foods you eat.

Your blood is what carries this sugar throughout your body to all your hungry cells and tissues. That’s why it’s called blood glucose. If you eat something that’s high on the index, your blood glucose will spike, giving you a fast boost of energy.