Classification of obesity

Human body weight
Part of a series on
General concepts Obesity (Epidemiology) Overweight Underweight Body shape Weight gain Weight loss Gestational weight gain Diet 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) PMOS
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 Satiety value Social determinants of obesity Social stigma of obesity Weight cutting Weight class

A front and side view of a morbidly obese male torso. Stretch marks of the skin are visible along with gynecomastia. — An obese male with a body mass index of 53 kg/m²: weight 182 kg (400 lb), height 185 cm (6 ft 1 in)

Obesity classification is a ranking of obesity, the medical condition in which excess body fat has accumulated to the extent that it has an adverse effect on health. The World Health Organization (WHO) classifies obesity by body mass index (BMI). BMI is further evaluated in terms of fat distribution via the waist–hip ratio and total cardiovascular risk factors. In children, a healthy weight varies with sex and age, and obesity determination is in relation to a historical normal group.