In 2002, director Morgan Spurlock subjected himself to a diet based only in McDonald's fast food three times a day for thirty days and without working out. His objective was to prove why most of the Americans are so fat, with many cases of obesity. He began the shootings submitting himself to a complete check-up with three doctors, and along the weeks, he compared his weight and results of exams, coming through a scary conclusion.—Claudio Carvalho, Rio de Janeiro, Brazil