Blood sugar is the substance that supplies energy to the body. When children have hypoglycemia, it can lead to insufficient function of the body and various hazards, as follows: 1. neurological system: the brain can only use glucose, if frequent or prolonged hypoglycemia, brain damage can occur, affecting intelligence and leading to dementia; if hypoglycemia occurs at night and parents fail to recognize it in time, serious cases can even lead to infant death; 2. growth and development: frequent hypoglycemia can lead to reduced energy supply of the body and affect the development of various organs of the body, such as height and reproductive system development, etc.