What if there was one magic pill that could boost your metabolism, increase your lifespan, help you feel full, clear up your complexion, control your cholesterol, and reduce your risk for cancer, diabetes and heart disease? OK, there’s not a pill, but there is a single ingredient: fiber. Yet, despite all of the health benefits, research shows that nine out of ten people fall short of the 25 or more grams we should squeeze in each day. Mix and match from this list of dietitian-approved foods to meet your daily quota while losing weight.