Morgan Spurlock subjects himself to a diet based only on McDonald's fast food three times a day for thirty days without exercising to try to prove why so many Americans are fat or obese. He submits himself to a complete check-up by three doctors, comparing his weight along the way, resulting in a scary conclusion.

• Kathbur Pictures
• Samuel Goldwyn Films
• Morgan Spurlock
• Daryl Isaacs
• Lisa Ganjhu
• Stephen Siegel
• Bridget Bennett
• Eric Rowley
• Mark Fenton
• Alexandra Jamieson