Dietary fiber is found only in plant foods, including fruits, vegetables, legumes, whole grains, nuts and seeds. Functional fiber is a newer term referring to isolated fiber that is added to foods.
After bariatric surgery, it can be difficult to obtain adequate fiber from foods due to much smaller portion sizes, so taking a fiber supplement may be beneficial. Aim for consuming 14 grams of fiber for every 1000 calories that you eat.
