The average American diet is high in sugar, fat,and refined carbohydrate. Many Americans choose fast foods for convenience despite these foods lack of nutrition. We are bombarded with advertisements for food and are served gigantic portions. As a result, obesity has become a widespread. problem in both children and adults.Obesity is the condition of having greater than 20 percent of one's total body weight as fat in men and greater that 30 percent of one's total body weight in women.