They are not alone if they have a child who has been diagnosed with diabetes. Diabetes is a chronic condition which needs close attention, but with some practical knowledge about it, they can become your child's most important ally in learning to live with the disease. Diabetes can affect any age, He might be having Type1 diabetes which is known to occur in early age also.. i know of a child who got diagnosed as diabetic at age of 2 years only....Talk to her doctor, learn more. The keys to treatment and effective control are insulin, exercise and diet. Diabetes is a disease that affects how the body uses glucose a sugar that is the body's main source of fuel. When you eat, Glucose from the food gets into your bloodstream, your pancreas makes a hormone called insulin, which helps the glucose get into the body's cells, and your body gets the energy it needs. Type 1 diabetes occurs when the pancreas fails to make enough insulin.