For obesity, one should register for an appointment in the endocrinology department. Obesity is a chronic metabolic disease caused by excessive accumulation or abnormal distribution of body fat. Obesity often occurs due to a higher calorie intake than expenditure in the body, resulting in excessive fat accumulation and thus overweight and bulky physique. An actual weight measurement exceeding 20% of the standard weight, and a fat percentage exceeding 30% can be classified as obesity. In endocrinology, obesity is generally divided into primary and secondary types. Some secondary factors, such as hypothalamic-pituitary disorders, hypercortisolism, hypothyroidism, hypogonadism, insulinomas, etc., can cause secondary obesity, therefore, it is appropriate to consult the endocrinology department for obesity.