Overweight and obesity are largely preventable by making healthier choices of foods and regular physical activities. The appropriate diet for prevention is an increase consumption of fruits and vegetables as well as whole grains, and nuts also limiting sugar and salt intake. A balanced diet of lean meats and carbs are also beneficial to keeping body fat under control. These guidelines are beneficial for preventing underweight overweight, and obesity. The main cause for obesity is due to an imbalance between the calories one consumes and the amount of physical activity. A consumption of high calories, high sugar, and high in fat foods that are low in vitamins all contributes to obesity and overweight. This in combination with decreased physical activity, and living a sedentary lifestyle increases the chances of chronic diseases such as high blood pressure, diabetes, cardiovascular disease, and some cancers.
Sizer, F. & Whitney, E. (2011). Nutrition: Concepts and Controversies (12th ed.). Mason, OH: Cengage Learning
