Dieting is the practice of eating food in a regulated way to decrease, maintain, or increase body weight, or to prevent and treat diseases such as diabetes and obesity. As weight loss depends on calorie intake, different kinds of calorie-reduced diets, such as those emphasising particular macronutrients, have been shown to be no more effective than one another. As weight regain is common, diet success is best predicted by long-term adherence. Regardless, the outcome of a diet can vary widely depending on the individual.
In nutrition, biology, and chemistry, fat usually means any ester of fatty acids, or a mixture of such compounds, most commonly those that occur in living beings or in food.
The Atkins diet is a low-carbohydrate fad diet devised by Robert Atkins in the 1970s, marketed with claims that carbohydrate restriction is crucial to weight loss and that the diet offered "a high calorie way to stay thin forever".
Ancel Benjamin Keys was an American physiologist who studied the influence of diet on health. In particular, he hypothesized that replacing dietary saturated fat with polyunsaturated fat reduced cardiovascular heart disease. Modern dietary recommendations by health organizations, systematic reviews, and national health agencies corroborate this.
Low-carbohydrate diets restrict carbohydrate consumption relative to the average diet. Foods high in carbohydrates are limited, and replaced with foods containing a higher percentage of fat and protein, as well as low carbohydrate foods.
Super Size Me is a 2004 American documentary film directed by and starring Morgan Spurlock, an American independent filmmaker. Spurlock's film follows a 30-day period from February 1 to March 2, 2003, during which he claimed to consume only McDonald's food, although he later disclosed he was also drinking heavy amounts of alcohol. The film documents the drastic change on Spurlock's physical and psychological health and well-being. It also explores the fast food industry's corporate influence, including how it encourages poor nutrition for its own profit and gain.
Morgan Valentine Spurlock was an American documentary filmmaker, writer, and television producer. He directed 23 films and was the producer of nearly 70 films throughout his career. Spurlock received acclaim for directing the documentary Super Size Me (2004), which was nominated for the Academy Award for Best Documentary Feature Film. He produced What Would Jesus Buy? (2007) and directed Where in the World Is Osama bin Laden? (2008), POM Wonderful Presents: The Greatest Movie Ever Sold (2011), Comic-Con Episode IV: A Fan's Hope (2011), and One Direction: This Is Us (2013).
The Physicians Committee for Responsible Medicine (PCRM) is a non-profit research and advocacy organization based in Washington, D.C. According to Charity Navigator, the organization works for "compassionate and effective medical practice, research, and health promotion."
Don Gorske is an American world record holder known as the "ultimate Big Mac fan," having eaten over 34,128 such hamburgers from the U.S. fast food chain McDonald's in his lifetime, earning him a place in the Guinness Book of Records. A resident of Fond du Lac, Wisconsin, Gorske claims the Big Mac constitutes 90–95% of his total solid food intake. He is featured in the documentaries Super Size Me (2004) and Don Gorske: Mac Daddy (2005), and is the author of 22,477 Big Macs (2008).
A very-low-calorie diet (VLCD), also known as semistarvation diet and crash diet, is a type of diet with very or extremely low daily food energy consumption. VLCDs are defined as a diet of 800 kilocalories (3,300 kJ) per day or less. Modern medically supervised VLCDs use total meal replacements, with regulated formulations in Europe and Canada which contain the recommended daily requirements for vitamins, minerals, trace elements, fatty acids, protein and electrolyte balance. Carbohydrates may be entirely absent, or substituted for a portion of the protein; this choice has important metabolic effects. Medically supervised VLCDs have specific therapeutic applications for rapid weight loss, such as in morbid obesity or before a bariatric surgery, using formulated, nutritionally complete liquid meals containing 800 kilocalories or less per day for a maximum of 12 weeks.
A low-fat diet is one that restricts fat, and often saturated fat and cholesterol as well. Low-fat diets are intended to reduce the occurrence of conditions such as heart disease and obesity. For weight loss, they perform similarly to a low-carbohydrate diet, since macronutrient composition does not determine weight loss success. Fat provides nine calories per gram while carbohydrates and protein each provide four calories per gram. The Institute of Medicine recommends limiting fat intake to 35% of total calories to control saturated fat intake.
Gary Taubes is an American journalist, writer, and low-carbohydrate / high-fat (LCHF) diet advocate. His central claim is that carbohydrates, especially sugar and high-fructose corn syrup, overstimulate the secretion of insulin, causing the body to store fat in fat cells and the liver, and that it is primarily a high level of dietary carbohydrate consumption that accounts for obesity and other metabolic syndrome conditions. He is the author of Nobel Dreams (1987); Bad Science: The Short Life and Weird Times of Cold Fusion (1993); Good Calories, Bad Calories (2007), titled The Diet Delusion (2008) in the UK and Australia; Why We Get Fat: And What to Do About It (2010); The Case Against Sugar (2016); and The Case for Keto: Rethinking Weight Control and the Science and Practice of Low-Carb/High-Fat Eating (2020). Taubes's work often goes against accepted scientific, governmental, and popular tenets such as that obesity is caused by eating too much and exercising too little and that excessive consumption of fat, especially saturated fat in animal products, leads to cardiovascular disease.
Diet plays an important role in the genesis of obesity. Personal choices, food advertising, social customs and cultural influences, as well as food availability and pricing all play a role in determining what and how much an individual eats.
Weight management refers to behaviors, techniques, and physiological processes that contribute to a person's ability to attain and maintain a healthy weight. Most weight management techniques encompass long-term lifestyle strategies that promote healthy eating and daily physical activity. Moreover, weight management involves developing meaningful ways to track weight over time and to identify the ideal body weights for different individuals.
Criticism of fast food includes claims of negative health effects, animal cruelty, cases of worker exploitation, children-targeted marketing and claims of cultural degradation via shifts in people's eating patterns away from traditional foods. Fast food chains have come under fire from consumer groups, such as the Center for Science in the Public Interest, a longtime fast food critic over issues such as caloric content, trans fats and portion sizes. Social scientists have highlighted how the prominence of fast food narratives in popular urban legends suggests that modern consumers have an ambivalent relationship with fast food, particularly in relation to children.
"Supersize Me" is the seventh episode of season 8 and 207th episode overall of the American animated television series Beavis and Butt-Head. It aired on MTV on November 17, 2011, along with "Bathroom Break".
Fat, Sick and Nearly Dead is a 2010 American documentary film which follows the 60-day journey of Australian Joe Cross across the United States as he follows a juice fast to regain his health under the care of Joel Fuhrman, Nutrition Research Foundation's Director of Research.
Nutrition psychology is the psychological study of the relationship between dietary intake and different aspects of psychological health. It is an applied field that uses an interdisciplinary approach to examine the influence of diet on mental health. Nutrition psychology seeks to understand the relationship between nutritional behavior, mental health and general well-being. It is a sub-field of psychology and more specifically of health psychology, and may be applied to numerous related fields, including psychology, dietetics, nutrition, and marketing.
Super Size Me 2: Holy Chicken! is a 2017 American documentary film directed by Morgan Spurlock. A sequel to the 2004 film Super Size Me, it explores ways in which the fast food industry has rebranded itself as healthier since his original film through the process of Spurlock working to open his own fast-food restaurant, thus exposing some of the ways in which rebranding is more perception than reality. This was Spurlock's final film before his death in 2024.
Eating You Alive is a 2018 health documentary film about why Americans are suffering from chronic diseases such as cardiovascular disease, diabetes, obesity, autoimmune disease, among other diseases, and whether the outcome can be changed.
