How is obesity defined? What are the possible causes of obesity? How can obesity in America be prevented?

Essay Subject: Obesity has grown too the point that it has replaced smoking as the number one preventable cause of disease in America. Even though obese people have to take responsibility for what and how much they eat, society has not only created obesity but it also discriminates against those affected. The media, food companies and rapidly advancing technology are all factors that influence not only the increase in obesity rates but also the psychological state of the obese.

Questions to consider are: How is obesity defined? What are the possible causes of obesity? How can obesity in America be prevented?