is a type of Carbohydrate that keeps your digestive system working well.

fiber

Explanation:

Whole grains are the best source of carbohydrates because they provide energy plus vitamins, minerals and fiber. Eating whole grains as often as possible instead of highly refined grains, like white flour and white rice, can help reduce the risk of heart disease and diabetes and keep the digestive system healthy.

Fiber is a type of Carbohydrate that keeps your digestive system working well.

Explanation: Fiber is the other type of complex carbohydrate. Although it is made from sugars like starch, people don't have the enzymes necessary to break the bonds and turn fiber back into sugars, so it passes through your system undigested. In the process, it helps to clean out your colon and keep your digestive system working smoothly.

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