Hypoglycemia

Hypoglycemia is a condition in which blood glucose levels drop below normal — typically defined as below 70 mg/dL. Glucose is the brain's primary fuel source, so when levels fall too low, the brain is the first organ affected, producing symptoms like confusion, dizziness, shakiness, sweating, irritability, rapid heartbeat, and hunger. Severe hypoglycemia can cause seizures, loss of consciousness, and if untreated, can be life-threatening.

Hypoglycemia is most common in people with diabetes who take insulin or certain oral diabetes medications that stimulate insulin production. In these individuals, hypoglycemia can result from taking too much medication, skipping meals, exercising more than usual, or consuming alcohol without food. For people with diabetes, hypoglycemia awareness training and keeping rapid-acting glucose sources readily available are essential safety practices.

Non-diabetic (reactive) hypoglycemia can occur in people without diabetes, typically 2-4 hours after eating, particularly after high-carbohydrate meals that trigger an exaggerated insulin response. Fasting hypoglycemia in non-diabetic individuals is less common and may indicate underlying conditions such as insulinoma (insulin-producing tumor), liver disease, adrenal insufficiency, or certain metabolic disorders.

For people with diabetes, preventing and managing hypoglycemia is a critical safety concern. Regular blood glucose monitoring, consistent meal timing, appropriate medication dosing, and carrying emergency glucose sources are essential. If you experience frequent hypoglycemic episodes, your diabetes medications may need adjustment.

Non-diabetic hypoglycemia typically responds to dietary modifications: eating smaller, more frequent meals with balanced macronutrients (protein, fat, and complex carbohydrates), avoiding large amounts of refined carbohydrates on an empty stomach, and limiting alcohol consumption.