Thin people are also likely to get diabetes, and wasting may also be one of the clinical manifestations of diabetes. Diabetes belongs to a kind of endocrine metabolic system diseases, and bad habits, genetics, autoimmune and other factors have a certain relationship, generally speaking, obese patients are more likely to occur type 2 diabetes. But thin people may also occur diabetes. In terms of etiology, thin people may have decreased insulin secretion from the pancreas due to hereditary, immune and other factors, which may manifest as insulin-deficient type 1 diabetes; or they may already have diabetes, which may be detected in subsequent checkups due to gradual thinning without being aware of the condition. If diabetes is suspected, it is recommended to visit a hospital for examination and clarification under the guidance of a doctor.