Fiber is an important part of digestive health and the average daily fiber intake in the United States is way below the recommended 35 grams daily.
Constipation plagues many American adults at some time or another, and eating dietary fiber is one way to get and stay regular. A low fiber intake results in a digestive transit time of forty-eight hours or more, and this slow exit can result in the absorption of toxins form putrefied fecal material that has not been eliminated (yuck!)
Fiber is found naturally in whole grains, fruits and vegetables. When whole grains are refined (white bread and rice) fiber is removed.