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Reactive hypoglycemia (postprandial 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 hypoglycemia may include:
If you use insulin or other blood sugar lowering medications to treat diabetes, hypoglycemia after eating may mean that your medication dose needs to be adjusted.
For most people with reactive hypoglycemia, the actual cause isn't clear. But, the symptoms of this condition may relate to what food was eaten or variations in the timing of the food moving through the digestive system. Other possible causes of reactive hypoglycemia include alcohol, certain surgical procedures (gastric bypass or surgery for an ulcer), inherited metabolic disorders and some tumors.
Generally, a medical evaluation is done to learn if symptoms are caused by low blood sugar and if so, whether symptoms get better when blood sugar returns to normal. Additional testing may need to be done if you have more-serious symptoms.
Reactive hypoglycemia usually doesn't require medical treatment. However, any underlying medical condition will need to be treated. Dietary changes often help lessen your symptoms. Try making changes to the timing and composition of your meals, such as:
With
M. Regina Castro, M.D.
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