They found that pressure treatment modified the molecular structure of the starches. Microscopic images revealed that pressure treatment packed the fibers into small balls that were impervious to moisture. Many companies are interested in increasing the amount of fiber in their foods as a benefit to consumers. The recommended fiber intake is 20 to 35 grams per day. But on average, Americans get only about 15 grams per day.
Studies suggest that fiber decreases heart disease, some cancers, high blood pressure, and diabetes.
Nutritionists still agree that eating a variety of grains, fruits, vegetables, and legumes is the best way to get fiber.