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November 6, 2006

Diagnosis and Symptoms

Question from California, USA:

If someone has some form of glucose intolerance, would you expect to see an increase in diabetic symptoms (increased thirst, urination, etc.) during an illness such as a cold or the flu?

Answer:

Very often, patients with impaired glucose tolerance are without symptoms. The reason for that is that blood sugars have to get over 200 mg/dl [11.1 mmol/L] to cause glucose to spill in the urine. Patients with impaired glucose tolerance can have lower blood sugars than this and still be glucose intolerant. There is always the possibility that if you are known to have glucose intolerance, you can progress to frank diabetes. This can also come out during period of illness. If you are experiencing frequent urination, extreme thirst, blurring of vision, or weight loss, you need to contact your physician and have a blood sugar test performed.

JTL