Morgan Spurlock's documentary "Supersize Me" follows his 30 day experiment eating only food from McDonald's. Over the month, his health severely declines as he gains weight and his cholesterol and liver enzymes rise. The documentary examines the manipulative marketing tactics of fast food companies and their role in America's obesity epidemic. It also explores personal responsibility versus corporate responsibility in influencing people's health. Overall, the film is a cautionary tale about the dangers of a fast food-heavy diet.