This document discusses hypoglycemia (low blood sugar), including its causes, symptoms, management, and prevention. It defines hypoglycemia as a low serum glucose level and describes the most common causes as taking too much insulin (for diabetics) or lack of food intake. Symptoms are discussed as well as treatment approaches, which involve giving oral glucose, IV dextrose, or glucagon injections depending on the severity and consciousness of the patient. Reactive hypoglycemia, or low blood sugar occurring after eating, is also examined along with potential contributing factors and recommended treatments like dietary changes and frequent small meals. Prevention strategies highlighted include eating regularly, exercising with food, and diabetics always carrying fast-acting sugar.