I often had patients in primary care who would come to me and say, " Well Doc, I don't eat much so how come I am gaining weight or can't loose any weight." They have a very valid question. Often as Internists, we are not trained to delve into research of what portion is appropriate for my patient, or how much to tell my patient to eat or what variety is needed. How much portion size is needed. What type of foods are best for weight loss? This article is a scientific breakdown