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Intentional weight loss is the loss of total body mass as a result of efforts to improve fitness and health, or to change appearance through slimming. Weight loss is the main treatment for obesity, [1] [2] [3] and there is substantial evidence this can prevent progression from prediabetes to type 2 diabetes with a 7–10% weight loss and manage cardiometabolic health for diabetic people with a ...
A desire to lose weight is a common motivation to change dietary habits, as is a desire to maintain an existing weight. Many weight loss diets are considered by some to entail varying degrees of health risk, and some are not widely considered to be effective. This is especially true of "crash" or "fad" diets. [15]
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 (low-fat, low-carbohydrate, etc.), have been shown to be no more effective than one another.
The majority of guidelines agree that a calorie deficit, particularly 500-750 kcal daily, can be recommended to those who want to lose weight. [5] [12] A moderate decrease in caloric intake will lead to a slow weight loss, which is often more beneficial than a rapid weight loss for long term weight management. [8]
[22] [96] [178] [179] Although it is unclear what diets might support long-term weight loss, and although the effectiveness of low-calorie diets is debated, [180] lifestyle changes that reduce calorie consumption or increase physical exercise over the long term also tend to produce some sustained weight loss, despite slow weight regain over time.
Most patients do remain obese (BMI 25-35) following surgery despite significant weight loss, and patients with BMI over 40 tended to lose more weight than those with BMI under 40. [ 29 ] [ 30 ] Concerning metabolic syndrome , bariatric surgery patients were able to achieve remission 2.4 times as often as those who underwent nonsurgical treatment.
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. [1] Fat provides nine calories per gram while carbohydrates and protein each provide four calories per gram.
Overweight and obese people, including children, may find it difficult to lose weight on their own. [9] It is common for dieters to have tried fad diets only to find that they gain weight, or return to their original weight, after ceasing the diet. [10] Some improvement in patient psychological health is noted after bariatric surgery.