However, doctors say hormones can be controlled, and there are a few basic rules you can follow to control your appetite and shed the pounds.
One is to avoid appetite stimulants before meals. Foods like bread and alcohol can actually increase hunger.
"Bread and alcohol, when they're consumed on an empty stomach, can actually stoke your appetite. If you can just wait until the middle of a meal, you can actually reduce the amount of food you're going to eat," said Dr. Louis Aronne from Cornell Medical Center.
Doctors say you should also avoid eating instant oatmeal or other popular cereals because these cereals are so refined they leave people even hungrier.
Researchers suggest eating a lot of protein throughout the day to help suppress your appetite.