Question: Is it possible for blood sugar to be too low? I have pre-diabetes and take medicine for it, but sometimes find that I feel nauseated and irritable. I've heard that low blood sugar can cause this. What do you think?
Dr. Hibberd's answer:
Yes. Blood sugars under 60 are unusual. It is wise for you to be properly evaluated to determine why your blood sugar is so low.
Metformin may be taken for pre-diabetes but it will not cause low blood glucoses. Other diabetic agents may cause low blood sugars, so be alert to possible drug effects here. Low blood sugar can occur when meals stimulate excessive insulin secretion or as a result of insulin resistance. Sometimes hypoglycemia is seen in conjunction with other disorders of metabolism such as those involving the thyroid, adrenal glands, or pancreas.
Treatment will usually start with smaller, more frequent meals and addressing other underlying disorders if they are present. It would be wise for you to see your doctor for an evaluation. A five-hour glucose tolerance test will often help determine the severity of your hypoglycemia, and help you and your doctor with decision making on further investigation and management.
Sometimes these episodes are caused by a tumor of the pancreas, and may require. Keep an open mind and seek professional advice and appropriate evaluation.
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