Obesity


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.


Can people with obesity eat pork?
Patients with obesity are advised to primarily consume lean pork, as it generally contains more protein. If the pork is fatty, it has a higher fat content. Since obesity is a disease of nutritional excess, it is necessary to strictly control the total calorie intake, including carbohydrates, proteins, and fats — particularly the intake of carbohydrates and fats, which are strictly limited. However, patients with obesity can eat lean pork, as it contains high-quality protein which is beneficial for their physical health. Thus, people with obesity can eat pork, but they should focus on consuming lean cuts.


What department do you see for obesity?
The preferred specialty is endocrinology and metabolism because obesity itself is a metabolic disease. Besides the commonly known simple obesity, there is also a type called secondary obesity. The distinction between the two is that in simple obesity, the body does not suffer from any other disease; weight gain is merely caused by unscientific diet, irregular lifestyle, and lack of exercise, which can be resolved through some scientific methods. Another type is called secondary obesity, such as a common disease in endocrinology called Cushing's syndrome. It is caused by a tumor or hyperplasia in the pituitary or adrenal glands, or other reasons that lead to an excessive secretion of cortisol in the blood, consequently causing a redistribution of body fat, leading to moon face, buffalo hump, and accumulation of subcutaneous fat in the abdomen. Common in endocrinology, hypothyroidism can also lead to weight gain. This requires endocrinology specialists to diagnose and identify the specific condition in order to provide appropriate treatment.


Obesity is classified as a disease.
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.


What department should I go to for obesity?
Obesity is a chronic metabolic disease that belongs to the field of endocrinology, so the first choice for early-stage obesity is to see an endocrinologist. Some hospitals also have specialized weight management departments, which are also an option for consultation. When obesity is accompanied by other serious comorbid conditions, such as coronary heart disease or heart failure, in addition to seeing an endocrinologist, it is also necessary to visit the cardiology department. If there is concomitant osteoarthritis, a visit to the orthopedics department is needed. Women suffering from menstrual irregularities or infertility should consult with a gynecologist. In summary, obesity is a disease that can cause multiple metabolic abnormalities and damage multiple systems, requiring early prevention and treatment.


Is it difficult for people with obesity to get pregnant?
Patients with obesity, especially women with excessive abdominal fat, often experience disrupted hormonal balance due to altered levels of circulating sex hormones. This frequently leads to ovulatory abnormalities and excess androgens, often accompanied by reproductive dysfunction. As a result, such conditions manifest as difficulty in conceiving, and are commonly associated with menstrual irregularities, amenorrhea, and infertility. Some patients may also develop polycystic ovary syndrome. Even in pregnant obese women, the risks of diabetes and hypertension increase, as do the risks of complications during childbirth and congenital abnormalities in their infants. Therefore, it is crucial for women of childbearing age to maintain a normal weight.


What tests are needed for obesity?
Obesity is divided into simple obesity and secondary obesity. Simple obesity refers simply to being overweight without any other primary diseases. Secondary obesity requires examination of certain conditions, such as hypothyroidism, which can lead to obesity, thus necessitating thyroid function tests; or Cushing's syndrome, which involves increased body weight due to excessive corticosteroid hormones produced by various causes, necessitating an examination of the cortisol rhythm and sometimes a dexamethasone suppression test, magnetic resonance imaging (MRI) of the pituitary, and CT scan of the adrenal glands; also conditions such as depression or psychiatric illnesses that can lead to weight gain, requiring corresponding psychiatric scales, among others. In addition to these tests, it is also necessary to consider the patient's clinical symptoms and then conduct targeted examinations based on these symptoms.


Can obesity be treated?
Obesity is treatable. Generally, the treatment of obesity mainly includes several aspects: First, dietary intervention; second, increased physical activity; third, correcting bad behavioral habits; some cases may require medication and surgery. Dietary treatment mainly involves reducing calorie intake and recommending a low-sugar diet. Physical exercise generally requires three to five days of activity per week, with 30-40 minutes each day being appropriate. It also includes correcting some poor dietary habits and enhancing self-monitoring, including records of food intake and daily physical activity. Medication treatment is an option for individuals with a body mass index (BMI) of 30 or higher, or a BMI of 27 or higher who also have obesity-related comorbidities. This treatment can be combined with exercise and dietary behavioral corrections. Furthermore, for those with a BMI of 40 or higher, or a BMI between 35-39.9 with one or more severe obesity-related complications such as hypertension, heart failure, type 2 diabetes, or sleep apnea, surgical treatment may be considered.


What are the dietary restrictions for obesity?
If it's obesity, it means a body mass index (BMI) greater than 28. In terms of dietary restrictions for obesity, the general principles are low salt and low fat. First and foremost, intake of fats should be limited, including both the cooking oils and foods consumed. Preference should be given to vegetable oils, and consumption of animal fats should be minimized. Even with vegetable oils, there is a limit to how much should be used, as excessive amounts can also exceed health standards. Furthermore, one should eat less fast food and junk food, such as various fried foods or those containing excessive seasonings, and these foods should be consumed minimally. There are also "invisible" fats to consider, such as those found in nut snacks and various small packaged snacks like peanuts and fried beans, which are very high in calories and should be consumed less. Additionally, sugary drinks like iced tea and pear syrup drinks should be avoided. The overall principle is a low-calorie diet, avoiding high-calorie foods.


Causes of Obesity
Obesity, also known as adiposis, is a chronic metabolic disease caused by excessive accumulation or abnormal distribution of fat in the body. It results from the interaction of multiple factors including genetic and environmental factors that cause fat accumulation. Primary obesity, also known as simple obesity, is the most common type and is mainly caused by poor dietary habits, such as excessive food intake, particularly excessive fats, and a sedentary lifestyle. There is also secondary obesity, which is generally caused by diseases of the endocrine system. Hormonal treatments for allergic diseases and rheumatic diseases can also lead to secondary obesity.