Fiber is found in the cell walls of plants where it functions as a skeleton to help plants to help maintain their shape and structure. Unlike, proteins, carbs and fats, digestive enzymes can’t break down fiber so it passes through your digestive tract. Fiber is important for a healthy digestive system and most women need about 25 grams of fiber per day. Increasing your fiber intake also makes losing weight so much easier. That’s because eating foods high in fiber will help fill you up so and keep you feeling full longer so you’re less likely to feel hungry between meals. In addition, most foods that are high in fiber are also low in calories. Fiber is found in oats, citrus fruits, apples, pears, barley, psyllium, flax seeds, beans, whole wheat, oats nuts, wheat bran, dark green and brightly colored vegetables. Pro tip: it takes a few days for your body to adjust to a high-fiber diet, so increase your fiber slowly, over a few days to prevent bloating.