annotated bibliography

I'm very interested in discovering the real reason as to why most of Americans are obese especially since we are an affluent country, does this mean obesity only effects poor people or are rich people fat as well? In order to figure this out I think it is important to understand what obesity truly is and this article really helped to explain what is considered obese and the causes and effects. So I consider this a great beginning in the quest to discover and write about this most interesting topic.