There are two different forms of fiber which must be eaten :

Insoluble fiber: Unsoluble fiber-rich foods is needed to keep the digestive tract working well. Some examples are whole wheat, whole grains, wheat bran and vegetables.

Soluble fiber: This kind of fiber helps lower cholesterol levels and improve control over blood glucose levels, when eaten in large quantities. Some examples are oats, barley, nuts, seeds, legumes, fruits and vegetables.

Fiber controls blood sugar levels by the actions of these two types of fibers. Insoluble fiber slows down the rate of digestion and absorption of carbs, while also preventing sudden spikes in blood sugar levels. On the other hand, soluble fiber prevents the pancreas from producing an excess of insulin by increasing sensitivity of the cell to insulin. It also improves the way glucose is used by the liver, hence keeping blood sugar levels normal.

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