Even if you don't have diabetes, lowering your blood-glucose levels
may be good for your brain. Columbia University scientists report that
higher levels of blood glucose are associated with dysfunction in an
area of the brain's hippocampus; dysfunction in this part of the brain
with normal aging is known to contribute to cognitive decline.
The MRI-scan study of 240 dementia-free adults age 65 and older
included both diabetics and non-diabetics. Negative effects on the
brain could be seen even when blood sugar was only moderately
elevated. "We have a behavioral recommendation—physical exercise,"
said researchers, noting that exercise improves glucose regulation.—
Annals of Neurology.