It is recommended at least 25 grams of fiber per day which is a vital nutrient only food that contains carbohydrates. A high fiber diet is linked to a significantly lower risk of stroke, high blood pressure, heart diseases, obesity, diabetes, and some digestive diseases. Certain types of fiber also act as prebiotics, which serves as food for the beneficial gut bacteria that support anti-inflammation, immunity and mental health. Though fiber supplement is available, research shows that they don’t offer the same benefits as fiber derived from whole foods.