Obesity: A Medical Condition Requiring Medical Attention in Korea

Obesity is defined as excessive body fat accumulation that presents a risk to health, typically identified by a BMI of 30 or above (with lower thresholds of 25 commonly used for Asian populations, including in Korea's own clinical guidelines). It is a complex, multifactorial chronic condition with genetic, hormonal, environmental, psychological, and socioeconomic drivers — not simply a matter of willpower.

Korea's obesity rate has historically been lower than many Western countries, but rates of overweight and obesity have been rising steadily, driven by increasingly sedentary office work, long commuting and working hours that reduce time for exercise, dietary shifts toward processed and delivery food, and reduced physical activity among children and young adults. The health consequences of obesity are extensive: type 2 diabetes, cardiovascular disease, hypertension, sleep apnoea, osteoarthritis, certain cancers, PCOS, depression, and reduced life expectancy.

Korea's healthcare system addresses obesity through multiple pathways. NHIS national health screening includes BMI and waist circumference measurement, with counselling and referral for those at risk. Community health centres provide lifestyle counselling and dietitian referrals. Private metabolic clinics offer comprehensive obesity medicine programmes including pharmacotherapy (weight loss medications). Major hospitals' bariatric surgery programmes provide sleeve gastrectomy and gastric bypass for eligible patients with BMI ≥35 (or lower thresholds with obesity-related comorbidities).