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Why do I have high blood glucose levels after meals if I am on insulin?

High blood glucose levels after meals are a very common and frustrating problem for insulin users, especially if you have type 1 diabetes. The insulin that you get with a pump or an insulin pen goes into your fatty tissue below the skin (subcutaneous tissue). This enters your bloodstream way too slowly. You get excessively high blood glucose after you eat because nutrients (especially rapid-acting carbohydrates) are soaked into the bloodstream a lot faster than the insulin. This leads to a mismatch between the absorption of food and action of the insulin.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.