What Causes Low Blood Sugar If You''re Not Diabetic?

Non-diabetic hypoglycemia can result from several underlying causes that affect blood sugar regulation. Reactive hypoglycemia occurs 2-4 hours after eating, triggered by excessive insulin release in response to certain foods, particularly refined carbohydrates. Medical conditions such as insulinomas (insulin-producing tumors), adrenal insufficiency, or severe liver disease can cause repeated or fasting episodes of low blood sugar. Certain medicines, including quinine and sometimes beta-blockers, can contribute to hypoglycemia; beta-blockers may also make warning symptoms harder to notice. Heavy alcohol use, especially without enough food, can also lower blood sugar. Prolonged fasting, intense exercise without adequate fuel, or gastric bypass surgery may contribute to low blood sugar. In people without diabetes, clinicians usually confirm hypoglycemia by documenting symptoms together with a low glucose level and improvement after the glucose rises.