A double-blind study is one in which neither the participants nor the experimenters know who is receiving a particular treatment. This procedure is utilized to prevent bias in research results.
Total Dietary Fiber. Kidney beans contain more total dietary fiber per serving than the seven other most commonly consumed legumes in the United States, including black-eyed peas, chickpeas, lentils and black, navy, pinto and lima beans.
Lentils, kidney beans and garbanzo beans all contain at least 3 grams of insoluble fiber per 1/2 cup. Lima beans are even more impressive with 4 grams of insoluble fiber per 1/2 cup. Starchy vegetables, such as corn, potatoes, sweet potatoes, squash and green peas, also have high levels of insoluble fiber.lternative Grains. Most whole grains contain insoluble fiber, which is found in the bran portion of the grain. Rye, barley and brown rice all contain high levels of insoluble fiber and are generally easy to find at grocery stores or health food stores.