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Scientists Discover Surprising Possible Predictor of Dementia

Doctors may be able to test older people for early signs of dementia based on their driving patterns, a study suggests.

In the study, researchers from the Columbia University Mailman School of Public Health and engineering school analyzed data from the long-term study LongROAD (Longitudinal Research on Aging Drivers), which followed almost 3,000 older drivers for as long as four years. When the study began, the participants were active drivers between the ages of 65 and 79 and had no significant cognitive impairment and degenerative medical conditions.

During the study, 33 participants were diagnosed with mild cognitive impairment (MCI) and 31 with dementia. Machine-learning models were then developed to detect MCI and dementia from the subjects' driving behavior. Read on—and to ensure your health and the health of others, don't miss these Sure Signs You've Already Had COVID.

1

What is Dementia?

Portrait of worried senior man sitting on sofa in living room

"Dementia is not a single disease but a term that describes a collection of changes to memory, thinking, and personality that interfere with a person's ability to function," says Scott Kaiser, MD, a board-certified geriatrician and director of geriatric cognitive health at Providence Saint John's Health Center in Santa Monica, California. "This disorder can be caused by a variety of brain diseases or conditions." Alzheimer's disease is the most common form of dementia, affecting more than five million Americans.

2

The Typical First Sign of Dementia

Moody aged man feeling unhappy.

Memory problems are typically one of the first signs of dementia, the National Institutes on Aging says. These difficulties might be observed by a loved one or someone close to the person affected. Someone with dementia may forget recent or important events, names and places, or where they left certain objects.

RELATED: Everyday Habits That Lead to Aging

3

Other Signs of Dementia

Close-up portrait of charming old lady, covering her mouth with hands

According to Dr. Kaiser, besides memory loss, other symptoms of dementia can include:

  • Language difficulties, such as trouble finding the right words or communicating in general
  • Visual and spatial problems, such as getting lost while driving
  • Difficulty solving problems and completing mental tasks
  • Difficulty organizing and planning
  • Impairments in walking or problems with coordination
  • Poor orientation to time or place, or general confusion
  • Unexplained changes to personality, such as depression, anxiety or mood swings; new and inappropriate behaviors; irritability or agitation

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4

Driving, Plus Other Factors Could Predict Dementia with 88% Accuracy

Female neighbor giving senior woman a lift In car.

"Based on variables derived from the naturalistic driving data and basic demographic characteristics, such as age, sex, race/ethnicity and education level, we could predict mild cognitive impairment and dementia with 88 percent accuracy," said Sharon Di, associate professor of civil engineering and engineering mechanics and lead author of the study, which was published in the journal Geriatrics.

The researchers found that age was the number one risk factor for MCI or dementia, but a number of driving patterns were close behind. They included the percentage of trips traveled within 15 miles of home, the length of trips that started at home, minutes per trip, and the number of hard braking events with fast deceleration rates. Driving behavior alone could predict MCI or dementia with 66 percent accuracy.

RELATED: Most Common Health Problems After Age 70, Say Doctors

5

Diagnosing Dementia Remains Challenging

Doctor and senior woman wearing facemasks

The genesis of dementia—an umbrella term for a decline in memory, judgment and the ability to communicate, which includes the neurodegenerative diseases Alzheimer's and Parkinson's—is unclear, and diagnosing it early has proved challenging. Doctors are likely to welcome any new diagnostic criteria that can help. Although dementia can't be cured, early detection and management can slow its progression.

"Driving is a complex task involving dynamic cognitive processes and requiring essential cognitive functions and perceptual motor skills. Our study indicates that naturalistic driving behaviors can be used as comprehensive and reliable markers for mild cognitive impairment and dementia," said Guohua Li, MD, DrPH, professor of epidemiology and anesthesiology at Columbia and the study's senior author. "If validated, the algorithms developed in this study could provide a novel, unobtrusive screening tool for early detection and management of mild cognitive impairment and dementia in older drivers." And to get through this pandemic at your healthiest, don't miss these 35 Places You're Most Likely to Catch COVID.

The post Scientists Discover Surprising Possible Predictor of Dementia appeared first on Eat This Not That.


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