Abstract. Type 1 diabetes is mostly found in children. Due to lack of insulin in the body, the first symptoms of patients such as frequent urination, drinking large amounts of liquid, weakness, and weight loss are observed. Treatment of type 1 diabetes consists of diet, physical activity and insulin therapy. Type 1 diabetes is passed from generation to generation, if a strict diet is followed, physical activity is ensured and the child's condition is monitored, the symptoms of the disease can be prevented. If it is the other way around, there is a disturbance in eye and kidney function. Along with complications in small and large blood vessels, stunting and retardation of sexual development occur. These symptoms are late complications of diabetes.