Super Size Me is a 2004 documentary film, directed by and starring Morgan Spurlock, an independent U.S. filmmaker. It follows a period in which he eats only McDonald's fast food, three times a day, every day, for thirty days—and stops exercising regularly—and it documents the physical and psychological effects this has upon him. In addition, Spurlock explores the corporate influence of the fast food industry and how it encourages poor nutrition for its own profit.

Spurlock, age 33, was healthy and slim, with a body mass of 185.5 lb (84.1 kg). Spurlock's height is 6 feet 2 inches (1.88 m). After thirty days, he gained 24.5 lb (11.1 kg), an increase of 13% of his body mass. He also experienced mood swings, sexual dysfunction, and nearly catastrophic liver damage. It took several months to lose the weight he gained and return to normal.

The driving factor for Spurlock's investigation was the increasing spread of obesity throughout U.S. society, which the Surgeon General has declared "epidemic", and the corresponding lawsuit brought against McDonald's on behalf of two overweight girls, who, it was claimed, became obese as a result of eating too much McDonald's food. Spurlock points out that, although the lawsuit against McDonald's failed, much of the same criticism of the tobacco companies applies to fast food franchises.

The film opened in the U.S. on May 7, 2004, and was very successful for a documentary film, staying in the top ten of the box office for two weeks. It was nominated for an Academy Award for Best Documentary.

In February 2005 Super Size Me Educationally Enhanced DVD edition was released. It is an edited version of the film designed to be integrated into a high school health curriculum.

As the film begins, Spurlock is physically above average, as attested to by three doctors he enlists to track his health during the month-long binge. All three predict the "McMonth" will have unwelcome effects on his body, but none expect anything too drastic, one citing the human body as being "extremely adaptable".

Spurlock starts the month with a McBreakfast near his home in Manhattan, where there is one McDonald's per ¼ mi² (0.6 km²). The month also sees an increase in his use of taxis, as he aims to keep the distances he walks in line with the 2500 steps walked per day by the average American. Spurlock has several rules which govern his eating habits:

He must eat three McDonald's meals a day;

He must sample every item on the McDonald's menu at least once;

He cannot purchase anything not on the menu including aspirin; Bottled water is on the menu, so he may drink it.

He must "Super Size" his meal whenever the option is specifically verbally offered (and only then).

Day 2 brings Spurlock's first Super Size meal, and also his first "McStomachache", as he calls it, characterized by "McGurgles", "McTwitches", "McBrick", "McSweats" and "McGas". The food eventually causes him to vomit.

After five days Spurlock has gained almost 10 pounds (5 kg). It is not long before he finds himself with an inexplicable feeling of depression, and not much longer until he finds his bouts of depression, lethargy and headaches are relieved by a McDonald's meal. One doctor describes him as "addicted". He has soon gained another 10 pounds, putting his weight at 203 lb (92 kg). By the end of the month he weighs about 210 lb (95.5 kg), an increase of almost 25 lb (11 kg) which takes him five months to lose again.

Because he could only eat McDonald's food for a month, Spurlock refused to take any medication at all.

Spurlock's girlfriend, Alexandra Jamieson, attests to the fact that Spurlock has lost much of his energy and sex drive during his experiment. It's not clear at this time if Spurlock will be able to complete the full month of the high-fat, high-carb diet, and friends and family begin to express worry.

Around day 20 Spurlock experiences heart palpitations. Consultation with his concerned general practitioner, Dr Daryl Isaacs, reveals that Spurlock's liver is "turning into pâté", and the doctor advises him to stop what he is doing immediately to avoid any serious heart problems. He compares Spurlock with the protagonist in Leaving Las Vegas who deliberately drinks himself to death over a similar time period. Despite this warning, Spurlock decides to continue the experiment. He later stated in an interview that he was inspired to do so by his brother who, when Spurlock confided his doubts about continuing, responded, "Morgan, people eat this shit their whole lives!"

Spurlock makes it to day 30 and achieves his goal. In thirty days, he "Supersized" his meals nine times along the way (five of which were in Texas, the state with the highest number of "fat cities" in the U.S., according to one somewhat controversial study). All three doctors are surprised at the degree of deterioration in Spurlock's health.

After the completion of the project, it would take Spurlock several months to return to his normal weight of 185 pounds. His girlfriend Alex, a vegan chef, began supervising his recovery with her "detox diet," which became the basis for her book, entitled The Great American Detox Diet.

Alongside Spurlock's personal travails are interviews and sections detailing various factors that could account for the USA's high obesity rates. He discusses the lack of healthy food available in many US schools, the "luring in" of youth by advertising and McDonald's kid-friendly play parks and clowns, and the relationship, if any, between food companies' stockholder profit and their customer health concerns.

Like Eric Schlosser's Fast Food Nation, the film is about the dark side of the fast food industry. It suggests that prolonged consumption of fast food may be very unhealthy, at least if, as in the movie, one does not eat anything else besides that. The lack of exercise is only partially addressed, and critics claim this would change the overall tone of the piece.

Subsequent to the showing of the film at the 2004 Sundance Film Festival, McDonald's phased out its Supersize meal option, and began offering healthier menu items in addition to its customary fare, though McDonald's denied that this was in reaction to the movie.

The film received the highest-ever opening for a documentary in Australia and, within two weeks of release, sparked a massive negative ad campaign, with an estimated cost of 1.4 million USD, from McDonald's of Australia. CEO Guy Russo described the documentary, on television commercials which aired on all major Australian networks, as being "about a person who decides to overeat", and attempted to minimize Spurlock's claim of the unhealthiness of fast food by agreeing with it. Russo stated to News Limited that customers had been surprised that the company had not addressed the claims. McDonald's placed a 30-second ad spot in the opening trailers of all viewings of Super Size Me and also offered to pay movie theatres to allow McDonald's employees to distribute apples to patrons as they exited the film.

Incidentally, country singer Gretchen Wilson announced a commitment to eating at McDonald's at every stop along her world tour.

In the United Kingdom, McDonald's placed a brief ad in the trailers of showings of the film, pointing to the website www.supersizeme-thedebate.co.uk. The ads simply stated, "See what we disagree with. See what we agree with".

Several criticisms of Spurlock's film have been made.

Spurlock made no attempt to provide concrete sources for many of his "facts" such as his claim that the average "American" only walks 2500 steps a day. The averages, according to differing sources vary widely from 2000 to 7192. Experts from Cornell University say "the average American takes about 5,600 steps a day and engages in about 10 minutes of physical activity and gains one to three pounds a year. About 65 percent of Americans are overweight or obese, twice the percentage than in the 1980s."

His experiment includes forcing himself to eat three meals a day, even when not hungry. His diet was also between two and three times the Recommended Dietary Allowance of 2000 to 2500 calories (8,400 to 10,500 kilojoules).

Spurlocks's girlfriend claimed he had decreased sexual stamina and often times she found herself on top. This may have been due to a number of issues either psychological or physiological. According to the Erectile Dysfunction Information Center "Most erectile dysfunction has a physical cause. Heart disease, diabetes and Peyronie's disease can damage blood vessels and nerves. Treatment for prostate cancer can cause damage. In a few cases, erectile dysfunction has a psychological cause. In addition to the major physical causes of erectile dysfunction, there are other causes such as spinal cord injuries, smoking, alcohol, MS, vascular disease and more."

Though Spurlock does not offer specific data to support the above claims, it should be noted that the effects of unhealthy diets and little exercise in the United States are considered common knowledge: health officials frequently assert that Americans too often eat poorly and do not have enough physical activity. Furthermore, the growing proportion of Americans who are either overweight or obese has repeatedly been described as an epidemic with far-reaching consequences.

Similarly, many of Spurlock's critics also concede that the corporate production, distribution, and advertising of food does in fact make higher levels of food energy consumption possible.

The phrase "super size me" has become a synonym of "big and useless" these days. For example, in a New York Times article, the author writes: "[Even though some smaller companies are quality-oriented,] large corporate construction companies still rule the sites, with their supersize-me approach to building." It is additionally used as the representative for the entire artificial culture (e.g. Coca-Cola, McDonald's, etc.).

The usage of so-called McWords is a testament to the influence McDonald's has on popular culture, akin to the frequent use of "Mc-" as a prefix, as in McJob, McMansion, McChurch and McDojo.

In the Netherlands Wim Meij, a reporter with the Algemeen Dagblad (a Dutch newspaper), did a similar experiment. However, instead of choosing just any meal from the menu, he carefully chose his menu. He actually came out at least as healthy as he was before he started his 30-day experiment. He lost 6.5 kg (14 lb) and also other things (like his blood pressure) were affected positively.

In New Jersey, USA, documentary filmmaker Scott Caswell also did a similar experiment. The results of his diet can be seen in his movie, which is titled Bowling for Morgan. It can be seen for free at BowlingForMorgan.com. Like Spurlock, Caswell consumed only McDonald's food, but opted for the healthier choices and didn't gorge himself. Over the course of the experiment, he lost 19 pounds and his cholesterol fell sharply.

Soso Whaley, of Kensington, New Hampshire, made her own film about dieting at McDonald's, called Me and Mickey D. The film follows Whaley as she spends three 30-day periods on the diet. She dropped from 175 to 139 pounds, eating 2,000 calories a day at McDonald's. The film was funded by the Competitive Enterprise Institute (Whaley holds a C.E.I. fellowship), an agency founded and partially funded by tobacco, petroleum, and fast food companies. C.E.I. is opposed to government regulation, and has spoken publicly against anti-tobacco laws.

Raleigh, NC, resident Merab Morgan went on a 90-day diet in which she ate McDonald's exclusively, but she limited her intake to 1,400 calories (5,900 kilojoules) per day. She lost 37 pounds in the process. Article in Detroit Free Press