I was interested in this article since I thought this could be helpful for most people in this society. Most people, nowadays, love eating fast food because it is convenient and tasty. However, the study from Texas University Southwestern Medical Center proved that those foods, such as hamburgers, milkshakes, ice creams, or chocolates let people to eat more and more. The reason is that the saturated fats from foods directly stimulate cerebrum; according to the study, Dr. Clegg indicates that fatty acid ignores the hormones of insulin and leptin in cerebrum. Therefore, people do not feel satiated while eating. The hamburgers strongly take this action so that people want to eat same hamburgers again even after three days.