BMI25 is overweight and unhealthy. China’s adult BMI is <18.5 for underweight, 18.5-23.9 is normal weight, 24-27.9 is overweight, ≥28 is obese. BMI is the body mass index or body mass index, which is an important standard used to measure the degree of fatness and thinness of the human body, as well as whether it is healthy. The formula for calculating BMI is weight (kg) ÷ [height (m²)] and is suitable for people aged 18 to 65. It is generally recommended to achieve weight loss by controlling diet and enhancing physical exercise to keep the BMI within the normal range; BMI less than 18.5 is considered underweight, and it is recommended that the patient should develop good dietary habits, supplement the nutrition needed by the human body appropriately to avoid malnutrition, and at the same time, enhance physical exercise to strengthen the physical fitness and improve the immunity of the organism. It is recommended that if the patient is not feeling well, he should go to the hospital in time, complete the relevant examinations, clarify the cause of the disease, and choose the appropriate treatment program under the guidance of the doctor, avoiding self-medication and delaying the condition.