fiber-rich foods listing an array of whole, unrefined plant foods.1292 Those of us who may be a little smug about our hearty intake of fruits and vegetables need to realize that fruits and leafy veggies are the poorest whole-food sources of fiber. Why? Because they’re 90 percent water. Root vegetables have about twice as much on a per-weight basis, but the fiber superstars are whole grains and legumes, which include dried or canned beans, split peas, chickpeas, and lentils.1293