Does being overweight in old age cause memory problems?

Sep 19, 2007

While obesity has been shown to contribute to high blood pressure, heart disease and diabetes, being overweight in old age does not lead to memory problems, according to a study published September 19, 2007, in the online edition of Neurology, the medical journal of the American Academy of Neurology.

The six-year study involved 3,885 community dwelling people over age 65 in Chicago, IL. Of the participants, nearly 25 percent were obese with a body mass index (BMI) over 30, and 37 percent were overweight with a BMI between 25 and 29.9. Four cognitive tests were given at the beginning of the study and every three years thereafter over the six-year period.

The study found no significant changes in memory or cognitive function throughout the study for overweight or obese participants. In fact, participants who were underweight had more cognitive decline over time.

“We do not know yet why being overweight or obese does not increase the risk for cognitive decline in old age, however being underweight may be a correlate of the initial stages of Alzheimer’s disease,” said study author Maureen T. Sturman, MD, MPH, Rush University Medical Center and John H. Stroger Hospital of Cook County in Chicago. “While past studies have found obesity in middle age increases a person’s risk for dementia or Alzheimer’s disease, our findings show obesity in old age has no effect on a person’s memory. These findings are consistent with previous studies showing that weight loss or low BMI in old age may be a precursor of cognitive decline or Alzheimer’s disease.”

Source: American Academy of Neurology

Explore further: Poor psychosocial work environments may contribute to heart problems

add to favorites email to friend print save as pdf

Related Stories

Standalone wireless info display device an easy fit

1 hour ago

A Latvian team has come up with a good-looking WiFi display device, connecting to the Internet using WiFi, which runs on a high-capacity built-in battery and tracks what's important to you. This is a standalone ...

Technology improves avalanche gear for backcountry skiers

2 hours ago

As outdoor recreation companies increasingly cater to skiers and snowboarders who like to venture beyond the groomed slopes at ski resorts and tackle backcountry terrain, they've put a special emphasis on gear and equipment ...

The elephant poaching business in numbers

2 hours ago

From the pittance paid to local poachers to a multi-billion dollar industry, here are some of the key numbers related to Africa's endangered elephants:

UN moves toward major treaty for ocean biodiversity

3 hours ago

UN member states agreed Saturday to begin negotiations on a treaty to protect marine biodiversity in ocean areas extending beyond territorial waters, in a move heralded by environmental organizations.

Recommended for you

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.