27 Jan 2015 --- A new study suggests that your breakfast cereal choice may affect how full you feel and how much you eat for lunch, especially if you're overweight. According to new research published in the latest issue of the Annals of Nutrition and Metabolism, scientists found that having oatmeal (Quaker Oats Quick 1-minute) for breakfast resulted in greater fullness, lower hunger ratings and fewer calories eaten at the next meal compared to a calorie-matched breakfast of a ready-to-eat cereal (RTEC) - sugared corn flakes.