If a person is getting thinner and thinner, it is usually necessary to go to the hospital to check the blood sugar, thyroid function and digestive system status. 1. Blood sugar: people with high blood sugar are usually thin. Mainly the body’s blood sugar utilization is not good, it will lead to high blood sugar production of sugar with the body excretion, then glucose naturally can not give the body to continue to provide energy, can only go to consume fat and protein, so the weight will be significantly reduced, thin. 2. Thyroid function: when there is hyperthyroidism, the body’s metabolism increases, the basal metabolic rate becomes faster, which leads to the decomposition of fat and protein, weight loss will be obvious. 3. Digestive system status: people are getting thinner and thinner with the gastrointestinal absorption function weakened has a lot to do with, in addition to thin will also be accompanied by poor body resistance, low immunity, such as chronic atrophic gastritis, chronic colitis and so on. Therefore, it must be treated under the guidance of the doctor, and it is also necessary to actively improve the diet and lifestyle habits. Thinning body may also be due to other reasons such as tumors, should consult a doctor in time, after discharging the physiological factors, follow the doctor’s instructions for treatment.