Supersize Me

Super Size Me is a 2004 American documentary film directed by and starring Morgan Spurlock, an American The film follows a 30-day period during which he ate only McDonald's food. The film documents this lifestyle's drastic effect on Spurlock's physical and psychological well-being, and explores the fast food industry's corporate influence, including how it encourages poor nutrition for its own profit.

Spurlock ate at McDonald's restaurants three times per day, eating every item on the chain's menu at least once. Spurlock consumed an average of 5,000 kcal per day during the experiment. An intake of around 2,500 kcal within a healthy balanced diet is more generally recommended for a man to maintain his weight. As a result, the then-32-year-old Spurlock gained (24 lb), a 13% body mass increase, increased his cholesterol to 230 mg/dL, and experienced mood swings, sexual dysfunction, and fat accumulation in his liver. It took Spurlock fourteen months to lose the weight gained from his experiment using a vegan diet supervised by his then-girlfriend, a chef who specializes in gourmet vegan dishes.

The reason for Spurlock's investigation was the increasing spread of obesity throughout U.S. society, which the Surgeon General has declared "epidemic". 

The documentary was nominated for an Academy Award for Documentary Feature.