Hello,
Welcome to Just Answer and thanks for your question. Your son needs a medical examination and blood work to determine what is going on. If his puberty is delayed, then there are prescription drugs that may be considered, but there is nothing at all you can do at home to help him with this other than seeing to it that he has a nutritious diet and gets plenty of exercise.
http://www.healthsystem.virginia.edu/UVAHealth/peds_diabetes/delayed.cfm
Nurse Practitioner
Board Certified Nurse Practitioner, MS, RN. Private practice and hospitalist experience.