Diet: Oatmeal for Breakfast = Fullness & Lower Calorie Intake at Lunch.
Your breakfast choice may affect how full you feel during the rest of the morning and how much you eat for lunch. Scientists from the New York Obesity Nutrition Research Center at Mount Sinai St. Luke’s Hospital report that having oatmeal for breakfast results in greater fullness, less hunger, and fewer calories eaten during lunch compared with those eating a ready-to-eat cereal for breakfast. The researchers believe that the greater satiety effect of oatmeal cereal compared to sugared ready-to-eat cereal or water might be due to slower gastric emptying, as they found that oatmeal took longer to leave the stomach.
Annals of Nutrition and Metabolism, January 2015