How does our brain let our body know we're full?

This is a surprisingly complex question. Your digestive system mostly informs the brain about being full, rather than the other way around, but both are actively involved. read more

A variety of signals from your body tell your brain when your stomach is full. Photo Credit: Minerva Studio/iStock/Getty Images Satiety, the sensation that you've had enough to eat, results from a balance of hormonal and neurological signals reaching your brain from your stomach. read more

Instead, feeling full is a result of your brain reacting to chemicals released when you put food or drink in your stomach. Your brain takes around 20 minutes to register these chemicals. After your meal, the levels continue to rise over 10 to 30 minutes. read more