Recent studies done by Cambridge University proved the theory that blood glucose acts as a short-term appetite regulation on the body.
So that means that naturally in our body, the amount of glucose in the blood regulates our appetite.
When there is enough glucose in the blood, we feel full but not enough glucose and our brain sends the signal to the body that it needs food to continue to function well. So less glucose means that you will get hungry.
For the majority of people who can’t control their weight, the connexion between the signals sent to their body by the brain and the level of glucose in their blood is interrupted, so appetite is not related anymore to glucose in the blood.