Seven Principles of Clean Eating. We asked âclean eatingâ expert, Diane Welland, to break down the main principles of this buzz-worthy trend.
Dietary fibers can act by changing the nature of the contents of the gastrointestinal tract and by changing how other nutrients and chemicals are absorbed. Some types of soluble fiber absorb water to become a gelatinous, viscous substance which is fermented by bacteria in the digestive tract. Some types of insoluble fiber have bulking action and are not fermented. Lignin, a major dietary insoluble fiber source, may alter the rate and metabolism of soluble fibers.
Bulking Agents (Fiber). Fiber is the laxative most doctors recommend for normal and slow-transit constipation. Abdominal cramping, bloating, or gas can occur when abruptly increasing or changing your dietary fiber intake. Fiber is naturally available in fruits, vegetables, and whole grains (especially wheat bran).