With diabetes, it’s common for blood sugar to go up when a person is ill. Usually these changes in blood sugar are mild, and last only a few days.

But in an extreme response to infection, changes in blood sugar can result in the diabetic complication “ketoacidosis.” This requires hospitalization and treatment with insulin and fluids. High blood sugar levels during infection can also cause dehydration. This can become an emergency known as “hyperosmolar coma.”

Since your husband has diabetes, it’s a good idea to check his blood sugar frequently when he’s ill. It’s especially important for him to drink plenty of fluids when he’s sick, too.

Zero-calorie sweeteners should not raise blood sugar levels. These sweeteners seem to be safe in diabetes.