High levels of blood glucose are linked to memory impairments

Here's another good reason to eliminate excess sugar from the diet.

From Scientific American

"A poor diet can eat away at brain health. Now a study in Neurology helps elucidate why. It suggests that eating a lot of sugar or other carbohydrates can be hazardous to both brain structure and function.

Diabetes, which is characterized by chronically high levels of blood glucose, has been linked to an elevated risk of dementia and a smaller hippocampus, a brain region critical for memory.

These findings indicate that even in the absence of diabetes or glucose intolerance, higher blood sugar may harm the brain and disrupt memory function."

http://www.scientificamerican.com/article/sugar-may-harm-brain-health/

Glad I gave up those Double Stuf Oreos!