he World Health Organization defines hyperglycemia as high blood sugar. According to the organization, this condition occurs when blood glucose levels are greater than 7.0 mmol/L (126 mg/dL) when fasting, and greater than 11.0 mmol/L (200 mg/dL) two hours after meals.
Hyperglycemia usually happens at individuals who are diagnosed with diabetes.
It is typically caused either by the destruction of insulin-producing cells in the pancreas or by the body’s resistance to insulin.