In the context of weight loss, medication, health or physical fitness, there is a lack of body mass, due to the loss of fluid, body fat or adipose tissue or lean mass, i.e. bone mineral deposits, muscles, tendon. , And other connective tissues. Due to malnutrition or an underlying illness, it may inadvertently result in weight loss or a conscious attempt to improve the status of a real or overweight or obesity."Unexplained" body weight loss, which is not due to a lot of calorie intake or lack of exercise, is called cachexia which leads to symptom of a serious medical condition. Intentional weight loss is usually called slimming.
Dieting is the practice of eating food in a regulated and supervised fashion to reduce body weight, maintain or increase, or stop and treat diseases like diabetes. A restricted or calorie deficit diet is often used by those who are overweight or obese, sometimes in combination with physical exercise, to reduce body weight. Some people follow a diet to increase weight (usually in the form of muscles). Diet can be used to maintain stable body weight and improve health.
To promote weight loss, the diet can be classified as Low fat, low carbohydrate, low calorie, very few calories, and recently flexible diet. A meta-analysis of six randomized controlled trials found no difference between low calorie, low carbohydrate and low-fat diet, with the reduction in weight of 2-4 kgs in 12-18 months in all studies. In two years, due to all calorie-low dietary types, weight loss occurs without emphasizing the macronutrient. In general, the most effective diet is that which reduces calorie intake.
A study published in American Psychologist has found that a "shortage of calorie intake" short-term dieting "does not improve the weight and health of most people". Other studies have found that the average person has some health loss Reduces. After dying. Diet reduces weight, while those classified as unhealthy are of benefit, which can otherwise increase the mortality rate for those who are otherwise healthy.
The first popular diet was "Banting", which was named after William Banting. In his 1965 pamphlets, Letter on Corpulence, Addressed to the Public interest, he underlined the description of a low-carbohydrate, low-calorie diet, which led to his own dramatic weight loss and improvement in lifestyle after that.