Obesity is a common group of metabolic diseases. When the human body eats more calories than it consumes, the excess calories are stored in the body in the form of fat. The amount exceeds normal physiological requirements, and when it reaches a certain value, it evolves into obesity. Normal adult adipose tissue weight accounts for 15% to 18% of body weight in men and 20% to 25% in women. As age increases, the proportion of body fat increases accordingly. Obesity assessment methods include anthropometry, dual-energy X-ray absorption, ultrasound, CT, infrared induction, etc. If there is no obvious cause, it is called simple obesity, and if there is a clear cause, it is called secondary obesity.
A person’s healthy weight is determined by BMI (body mass index) according to the standards recommended by WHO:
BMI = weight (kg)/height 2 (meters 2)
BMI<18.5 is emaciated; 18.5≤BMI≤23.9 is normal;
BMI≥24 is overweight; BMI≥28 is obese.
The main clinical symptoms of obesity are obesity and weight gain. Mildly obese people have no symptoms or only have less movement, drowsiness, and abdominal constipation. Female patients may experience reduced menstrual flow, while male patients may experience decreased sexual function or even impotence. Moderate patients may suffer from fat accumulation, excessive weight, and increased oxygen consumption during activity, which affects the heart and lungs and is prone to palpitation and shortness of breath. , or even cardiopulmonary insufficiency, etc., and often accompanied by hyperlipidemia, atherosclerosis, coronary heart disease, diabetes, gallstones and other diseases.
There are many reasons for obesity, including genetic, pathological, and drug factors. Modern medicine believes that obesity is related to excessive eating, excessive calories in the diet, and loss of nutritional balance. Excess nutrients can cause obesity, as can malnutrition or insufficient micronutrients. Many bad eating habits, such as partial eclipse and alcoholism, are easy causes of obesity.
