The studies showing significant blood pressure reductions involved increased intake of soluble fiber. More studies are currently underway to validate the impact of oat consumption in lowering blood pressure. I heard that oats can help you lose weight. Some emerging research suggest that eating oats may help control appetite. The soluble fiber in oats and oat bran absorbs a considerable amount of water, significantly slowing down the digestive process.
All liquid is absorbed by the oatmeal or oat bran while cooking.