In “The End of Overeating”, David A. Kessler, MD says that food, which is rich in sugar, salt, and fat test good; nevertheless, it affects us negatively. Fried food those we get in fast food restaurants are high in fat and sugar. These foods are consisting of unsaturated fat and hydrogenated oil. Companies like to use unsaturated fats in their food because they are cheap. Consequence of consuming such food can cause serious health problems. Food with sugar, salt and fats increase the cholesterol level, weight, heart diseases and high blood pressure. Some foods that are sold in fast food restaurants have high level of amino acid tyramine and phenyethyamine. The tyramine increases blood flow to brain which can lead to a headache. It has been proven that the high level of fat may cause a fast decline in people’s ability to think, learn and remember, according to University Medical Center in Chicago.