Hyperglycemia is a condition in which the body has abnormally high levels of sugar (glucose) in the blood. Blood sugar levels that cause hyperglycemia vary from person to person, but generally a blood sugar level of greater than 200 mg/dL (milligrams per deciliter) can be considered hyperglycemic. However, some people may have blood sugar levels as low as 140 mg/dL and still experience some of the symptoms of hyperglycemia.
In general, people with diabetes are more likely to experience hyperglycemia due to their impaired ability to regulate blood sugar levels. Hyperglycemia is one of the primary symptoms of diabetes, and is usually caused by insufficient insulin production or resistance to insulin. Without enough insulin to help move glucose into cells, the glucose accumulates in the bloodstream and causes high blood sugar levels.
Eating too much, not exercising enough, and certain medications can also contribute to hyperglycemia. Eating too much of certain carbohydrates (like white bread or potatoes) can cause a rapid increase in blood sugar levels. Not exercising enough can also lead to hyperglycemia, as physical activity helps move glucose from the bloodstream into cells. Certain medications can also cause an increase in blood sugar levels, especially medications that contain steroids.
Hyperglycemia can be serious, and should be addressed as soon as possible. If left untreated, it can lead to further complications such as diabetic ketoacidosis, a life-threatening condition. In order to prevent hyperglycemia, it is important to monitor your blood sugar levels regularly and to make sure to eat a balanced diet and stay active.