The primary cause of hyperglycemia is diabetes mellitus, a condition where the body either doesn't produce enough insulin or can't effectively use the insulin it produces. Insulin is a hormone that helps glucose from food get into your cells to be used for energy. Other causes can include: Certain medications (like steroids) Pancreatitis Certain endocrine disorders Stress or illness Lack of physical activity Poor diet Management focuses on controlling blood glucose levels. This typically involves: Diet: Eating a balanced diet low in refined sugars and carbohydrates. Exercise: Regular physical activity helps your body use glucose more efficiently. Medication: For many, this includes insulin injections or oral diabetes medications. Monitoring: Regularly checking blood glucose levels to track trends and adjust treatment.