The document discusses the effects of fast food. It notes that fast food is high in sodium, cholesterol, fats, carbohydrates and sugars. Eating fast food beyond nutritional needs leads to excess being stored in organs and blood vessels, which can cause diseases like obesity, heart disease and stroke. Obesity is defined as having 20% or more body fat and is caused by factors like genetics and environment. Obesity increases the risk of health issues such as heart disease, diabetes, cancers and respiratory problems. The document concludes that fast food may cause health problems.