A study published in the Archives of Internal Medicine found that overweight older women ran a higher risk of Alzheimer's disease than healthy-weight women.

The study tracked 392 women in Sweden as part of a general aging study done with women and men between the ages of 70 and 88. There were relatively few men in the study, so no conclusions could be drawn about a relationship of weight and Alzheimer's for men.

While many may equate Alzheimer's with a lower body weight, researchers say that much of that comes on after the disease has set in.

For the study, overweight was considered the medical standard, a BMI of 25 or above. Determine your BMI

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