Obesity is classified as a disease.

Written by Luo Juan

Endocrinology

Updated on October 30, 2024

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Obesity is a clinical syndrome characterized by a body mass index (BMI) exceeding normal levels. Generally, obesity with an unclear cause is called simple obesity, or primary obesity, while obesity with a known cause is called secondary obesity. In China, the standards for BMI are as follows: a normal BMI is below 24 kg/m². Being overweight is defined as having a BMI greater than 24 kg/m², mild obesity is greater than 26 kg/m², moderate obesity is greater than 28 kg/m², and severe obesity is greater than 30 kg/m². Therefore, obesity is a metabolic clinical syndrome.

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Written by Luo Juan

Endocrinology

1min 3sec

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How is obesity treated?

Regarding the treatment of obesity, the cause of obesity must first be identified. For patients with simple obesity, the primary approach involves lifestyle interventions, including exercise and diet. The diet should involve a calculation of caloric intake based on activity levels, generally focusing on a low-calorie or very low-calorie intake. Additionally, it is recommended to engage in suitable aerobic exercises. Currently, there are products available such as fat enzyme inhibitors that reduce weight by inhibiting the absorption of fats in the intestines. Also, in the United States, GLP-1 agonists are available for the treatment of simple obesity. If obesity is caused by certain medical conditions, such as an endocrine disorder known as Cushing's syndrome, which can also lead to obesity, treatment should first address the primary disease, which would also resolve the obesity.

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Written by Yang Li

Endocrinology

48sec

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Surgical treatment of obesity

Surgical treatment for obesity is applicable under certain conditions. This requires the obesity to reach a specific level, defined by indicators such as a BMI of over 35, and in the absence of severe diabetes or complications associated with diabetes. Considering surgical interventions for weight loss, these primarily involve bariatric surgeries like gastric bypass or gastroenterostomy which reduce food intake and absorption, thereby decreasing calorie absorption to achieve weight loss. While the effects of surgical weight loss are generally quite good, it can lead to some long-term postoperative complications, so careful consideration is required.

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Written by Luo Juan

Endocrinology

1min 45sec

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symptoms of obesity

Regarding the symptoms of obesity, they vary with the type of disease. For example, in secondary cases, there are clinical manifestations of the primary disease. For instance, obesity caused by hypothyroidism may also present with fatigue, poor appetite, dry skin, etc. Some people have obesity due to insulinoma or recurrent hypoglycemia, leading to repeated eating. The clinical manifestations also include symptoms of hypoglycemia such as palpitations, trembling hands, sweating, and a sense of hunger. If it is a case of simple obesity, generally, men primarily show an apple-shaped obesity, with fat accumulated mainly above the waist. In contrast, women exhibit a pear-shaped obesity, with fat accumulation below the waist, such as in the lower abdomen, buttocks, and thighs. Of course, related to obesity, there are also manifestations of cardiovascular diseases, high blood pressure, diabetes, etc. Some people with obesity may also experience sleep apnea syndrome, venous thrombosis, and so on. Studies suggest that the incidence of malignant tumors is also higher in patients with obesity. Because patients with long-term obesity carry excess weight for a long period, they may experience lower back pain, joint pain, swelling, and are more prone to abrasion or combined fungal or purulent infections in the folds of the skin. Therefore, the clinical manifestations of obesity vary according to the cause of the disease.

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Written by Tang Zhuo

Endocrinology

1min

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What is obesity?

Obesity is a common group of metabolic syndromes, which occurs when the caloric intake of a human body exceeds its caloric expenditure. The excess calories are then stored in the body in the form of fat. When this amount exceeds normal physiological needs and reaches a certain value, it evolves into obesity. There are many methods for assessing obesity, including anthropometry, dual-energy X-ray absorptiometry, ultrasound, CT, infrared sensing valves, and others. Obesity without a clear pathological cause is referred to as simple obesity, while obesity with a defined pathological cause is referred to as secondary obesity. The causes of obesity are of two types: one is primarily due to excessive diet and insufficient activity, where caloric intake exceeds caloric expenditure; the other is obesity caused by disorders of fat metabolism.

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Written by Luo Juan

Endocrinology

49sec

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The causes of obesity

Obesity can be classified into primary and secondary obesity according to its causes. Primary obesity, also known as simple obesity, is the most common type among various forms of obesity. It is mainly caused by poor dietary habits such as overeating, especially excessive intake of fatty foods, and a sedentary lifestyle, rather than being secondary to other diseases. Secondary obesity, on the other hand, is often due to diseases of the hypothalamic-pituitary axis, hypercortisolism, hypofunction of the thyroid or gonads, insulinomas, and other diseases. Secondary obesity is mainly due to diseases, and it can show some symptoms of the underlying disease.