You are in Food and Nutrition . But it can do a lot to keep you healthy. The recommended intake for adults is 20-35 grams per day, but most people's diets fall short. Fiber, found only in plant-based foods, is a general term for the complex carbohydrates in foods that pass through the body undigested.
Some foods contain soluble fiber, others contain insoluble fiber, and many contain a combination.
The two types of fiber act differently in the body, and both are important. But increasing the overall fiber content of your diet is more important than focusing on the specific types of fiber. These are grains, such as wheat, oats, rice, barley and corn, that have not been refined. Refining is the process of removing certain parts of the grain - the parts that happen to contain the fiber. White flour is made from refined wheat grain, whereas whole-wheat flour is made from unrefined wheat grain.