University of Michigan researchers are saying that the signal from your brain that tells you you're full -- and, therefore, that you should stop eating -- is weaker than the signal that says just keep going.
This weakness can lead to weight gain and feelings of over-fullness.
But the researchers have come up with a drug that could help those who eat too much.
The drug, naloxone, more commonly known as the drug used to block the effects of a heroin or morphine overdose, could also help people keep their food intake in check.
Naloxone reportedly sends a stop sign to the brain.