If you have diabetes, here's one more reason to make blood sugar control a top priority: Mounting research suggests that keeping blood glucose levels in check may guard against gradual cognitive decline.
Studies have indicated that in older people with diabetes, those with higher blood sugar levels score lower on memory tests. One theory for this is that long-term hyperglycemia may damage nerves and blood vessels responsible for healthy brain function.
Another culprit may be episodes of interrupted blood flowcalled cerebral infarctsthat sometimes occur in people with diabetes. Talk to your doctor about a blood sugar goal that is right for you.