04/03/2026
Although extreme cases of reactive hypoglycemia are very rare, doctors say that people with insulin resistance and those who are overweight or obese are vulnerable to this condition.
Reactive hypoglycemia refers to low blood sugar that occurs after a meal — usually within four hours after eating. This is different from low blood sugar (hypoglycemia) that occurs while fasting.
Signs and symptoms of reactive hypoglycemia include hunger, weakness, shakiness, sleepiness, sweating, light-headedness, headache, palpitations, irritability and anxiety. Increasing use of carbohydrates and fats and processed foods, along with reduced physical activity, are the underlying factors leading to the increasing prevalence of these conditions.
Patients with reactive hypoglycemia should be screened for diabetes or later development of diabetes as they might be having prediabetes.