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Weight loss

Human body weight
Part of a series on
General concepts Obesity (Epidemiology) Overweight Underweight Body shape Weight gain Weight loss Gestational weight gain Diet (nutrition) Weight management Overnutrition Childhood obesity (Epidemiology)
Medical concepts Adipose tissue Classification of obesity Exercise paradox Genetics of obesity Metabolic syndrome (Epidemiology of metabolic syndrome) Metabolically healthy obesity Obesity paradox Set point theory
Measurements Body adiposity index Body mass index Body roundness index Body fat percentage Body Shape Index Corpulence index Lean body mass Relative Fat Mass Waist–hip ratio Waist-to-height ratio
Related conditions Diabetes (Type 1) Eating disorder (Anorexia • Bulimia • Binge eating disorder) Food addiction Hyperthyroidism Malnutrition RED-S Starvation (Starvation response) PCOS
Obesity-associated morbidity Arteriosclerosis Atherosclerosis Fatty liver disease GERD Gynecomastia Heart disease Hypertension Obesity and cancer Osteoarthritis Prediabetes Sleep apnea Type 2 diabetes
Management of obesity Anti-obesity medication Bariatrics Bariatric surgery Dieting (List of diets) Caloric deficit Exercise (outline) Liposuction Obesity medicine Weight loss camp Weight loss coaching Yo-yo effect
Social aspects Comfort food Fast food (Criticism) Fat acceptance movement Fat fetishism Health at Every Size Hunger Obesity and the environment Obesity and sexuality Sedentary lifestyle Social determinants of obesity Social stigma of obesity Weight cutting Weight class
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Weight loss, in the context of medicine, health, or physical fitness, refers to a reduction of the total body mass, by a mean loss of fluid, body fat (adipose tissue), or lean mass (namely bone mineral deposits, muscle, tendon, and other connective tissue). Weight loss can either occur unintentionally because of malnourishment or an underlying disease, or from a conscious effort to improve an actual or perceived overweight or obese state. "Unexplained" weight loss that is not caused by reduction in calorific intake or increase in exercise is called cachexia and may be a symptom of a serious medical condition.