Apples: Add fiber to the list of ways that an apple a day could keep the doctor away — this fruit is an inexpensive and easily available source of fiber. As with other fruits and veggies with edible peels, eat your apple au naturale. The peels are an important source of fiber and nutrients like petrochemicals, Vakharia said. One medium apple (with peel!) has 4.4 grams of fiber.
