Is over-eating linked to memory loss?

According to a study on aging conducted by the Mayo Clinic, in days ahead it may be discovered that overeating causes memory loss.

Mayo researchers caution against reading too much into their work thus far correlating caloric intake in the elderly with the onset of mild cognitive impairment (MCI)—the stage between normal age-related memory loss and early Alzheimer's disease. Still, a report they plan to present in April at the American Academy of Neurology's 64th Annual Meeting in New Orleans indicates that overeating may greatly increase the risk of memory loss for elderly people.