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How can I prevent a high blood sugar after breakfast if I am on insulin?

To prevent high blood sugar after breakfast if you are on insulin, you should discuss with a nutritionist and your doctor how to better control your blood sugar in the morning. The way in which your doctor doses your insulin can affect how well your blood glucose is controlled in the morning. Avoiding simple or refined carbohydrates like sugar and processed flour in favor of complex carbohydrates (fiber) and protein will slow your blood sugar spikes and allow your insulin to work more effectively.
To avoid high blood sugar after breakfast, you should pre-bolus before eating breakfast. It is important to give yourself about 30% - 50% of what the insulin dose will be at least 30 minutes before eating the food. People with diabetes are more resistant to insulin in the morning. For a given amount of carbs, more insulin is usually required. It is not uncommon that someone has a more aggressive insulin-to-carb ratio for breakfast compared to lunch and dinner.

You also need to pay attention to the trend arrow on your continuous glucose monitoring (CGM) device. If it is going up at breakfast time, then this almost always means you need more insulin than usual for a given blood sugar and insulin-to-carb ratio. The extra insulin will vary between 50% and 150% more than the calculated dose, depending on your blood sugar level and the trend arrow.

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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.