Which type of fiber does not dissolve in water?

The type of fiber that does not dissolve in water is insoluble fiber. This fiber is characterized by its ability to retain its structure and remain intact when mixed with liquid. Insoluble fiber contributes to the bulk of stool and aids in promoting regular bowel movements by adding bulk to the digestive tract and helping food pass through it more easily.

Insoluble fiber is found in various foods such as whole grains, nuts, seeds, and the skins of fruits and vegetables. This contrasts with soluble fiber, which dissolves in water to form a gel-like substance and has different health benefits, including the ability to help lower cholesterol levels and regulate blood sugar. The other types of fibers mentioned, such as resistant fiber and fermented fiber, may also have unique properties but do not accurately describe the non-soluble nature of insoluble fiber. Therefore, in recognizing the distinct characteristics of intestinal health and digestive function, insoluble fiber plays a crucial role in supporting bowel regularity.