Fiber seems so, well, boring. By definition, fiber is indigestible. Since it can’t be absorbed into the body, it just stays in our gut to bulk up our stool. This is not to belittle the importance of bowel regularity. If just half the adult population ate three additional grams of fiber a day—only a quarter cup of beans or a bowl of oatmeal—we could relieve enough constipation to save billions in medical costs a year.
