Yes, but the types of foods we eat force us to over-eat AND make us fatter even if we did NOT over-eat. In other words, over-eating is not a cause; it is an affect, just like weight gain itself. If we are asking about the causes of weight gain because we want to solve the problem, don’t stop at the superficial answer that only makes weight loss harder to understand and achieve. If simple calorie imbalance were at the heart of our problem, dieting and exercise would work for most people, but it does not. In spite of this, the Institute of Medicine, the Center for Disease Control and Prevention, and the National Institutes of Health have teamed up to create a 4-part documentary (“The Weight of the Nation”) pushing the same old calorie balance idea that has only made our country fatter over the last half century.