PH
Many people think the stomach is responsible for telling you when to stop eating. In reality, your brain makes that decision after receiving signals from your stomach and intestines. These signals take about 20 minutes to reach the brain after you begin eating.
That's one reason eating too quickly can make you consume more food than you actually need. Slowing down gives your brain enough time to recognize that you're full. Your appetite is controlled by teamwork between your digestive system and your brain.
© National Institute of Diabetes and Digestive and Kidney Diseases