Yes, because oatmeal helps to keep you fuller for longer.
Researchers randomized individuals into three different breakfast groups: oatmeal made from quick oats, the same number of calories of Frosted Flakes, or just plain water. They then measured how much people ate for lunch three hours later. Not only did those who ate the oatmeal feel significantly fuller and less hungry, but they then went on to eat significantly less lunch. Overweight participants ate less than half as many calories at lunch after eating the oatmeal for breakfast—hundreds and hundreds of fewer calories. In fact, the breakfast cereal was so unsatiating that the corn flakes group ate as much as the breakfast-skipping, water-only group.
The soluble fiber in oatmeal forms a gel in the stomach, which delays stomach emptying and makes one feel full for a longer period, helping with weight loss.
For more information on the benefits of oatmeal over breakfast cereal, watch this video.
To learn more about oats, visit our topic page, which covers a broad range of the latest evidence-based research.