What is dietary fiber?
Dietary fiber is a type of carbohydrate, but it is not digested and absorbed by the body like starch or sugar, so it does not contain any calories.
What is water-soluble fiber and non-water-soluble fiber?
Dietary fiber can be divided into two types: water soluble and water insoluble. The water-soluble fiber has high viscosity, it can absorb a large amount of water in the intestinal tract, forms a gel and combines with the feces in the intestine and eventually to be excreted. Insoluble fiber helps to increase the volume and weight of the stool, accelerates intestinal peristalsis and promotes bowel movements.