Question: are bran flakes soluble fiber?
Answer: Soluble fibre slows digestion and helps regulate blood sugar and cholesterol levels. It's plentiful in oats, oat bran, barley and psyllium (e.g. Metamucil, psyllium-enriched bran cereals). On the other hand, foods such as wheat bran, whole grains, nuts and many fruits and vegetables contain mainly insoluble fibre.