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Tests to predict heart problems and stroke may be more useful predictor of memory loss than dementia tests

Date:
April 1, 2013
Source:
American Academy of Neurology (AAN)
Summary:
Risk prediction tools that estimate future risk of heart disease and stroke may be more useful predictors of future decline in cognitive abilities, or memory and thinking, than a dementia risk scores, according to a new study.

Risk prediction tools that estimate future risk of heart disease and stroke may be more useful predictors of future decline in cognitive abilities, or memory and thinking, than a dementia risk score, according to a new study published in the April 2, 2013, print issue of Neurologyฎ, the medical journal of the American Academy of Neurology.

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"This is the first study that compares these risk scores with a dementia risk score to study decline in cognitive abilities 10 years later," said Sara Kaffashian, PhD, with the French National Institute of Health and Medical Research (INSERM) in Paris, France.

The study involved 7,830 men and women with an average age of 55. Risk of heart disease and stroke (cardiovascular disease) and risk of dementia were calculated for each participant at the beginning of the study. The heart disease risk score included the following risk factors: age, blood pressure, treatment for high blood pressure, high density lipoprotein (HDL) cholesterol, total cholesterol, smoking, and diabetes. The stroke risk score included age, blood pressure, treatment for high blood pressure, diabetes, smoking, history of heart disease, and presence of cardiac arrhythmia (irregular heart beat).

The dementia risk score included age, education, blood pressure, body mass index (BMI), total cholesterol, exercise, and whether a person had the APOE ε4 gene, a gene associated with dementia.

Memory and thinking abilities were measured three times over 10 years.

The study found that all three risk scores predicted 10-year decline in multiple cognitive tests. However, heart disease risk scores showed stronger links with cognitive decline than a dementia risk score. Both heart and stroke risk were associated with decline in all cognitive tests except memory; dementia risk was not linked with decline in memory and verbal fluency.

"Although the dementia and cardiovascular risk scores all predict cognitive decline starting in late middle age, cardiovascular risk scores may have an advantage over the dementia risk score for use in prevention and for targeting changeable risk factors since they are already used by many physicians. The findings also emphasize the importance of risk factors for cardiovascular disease such as high cholesterol and high blood pressure in not only increasing risk of heart disease and stroke but also having a negative impact on cognitive abilities," said Kaffashian.

The study was supported by R้gion Ile-de-France, the Medical Research Council, the British Heart Foundation, the Health and Safety Executive, the French Department of Health, the National Heart, Lung, and Blood Institute, the National Institutes of Health, National Institute on Aging, Agency for Health Care Policy Research and the John D. and Catherine T. MacArthur Foundation.


Story Source:

The above story is based on materials provided by American Academy of Neurology (AAN). Note: Materials may be edited for content and length.


Journal Reference:

  1. S. Kaffashian, A. Dugravot, A. Elbaz, M. J. Shipley, S. Sabia, M. Kivimaki, A. Singh-Manoux. Predicting cognitive decline: A dementia risk score vs the Framingham vascular risk scores. Neurology, 2013; 80 (14): 1300 DOI: 10.1212/WNL.0b013e31828ab370

Cite This Page:

American Academy of Neurology (AAN). "Tests to predict heart problems and stroke may be more useful predictor of memory loss than dementia tests." ScienceDaily. ScienceDaily, 1 April 2013. <www.sciencedaily.com/releases/2013/04/130401181317.htm>.
American Academy of Neurology (AAN). (2013, April 1). Tests to predict heart problems and stroke may be more useful predictor of memory loss than dementia tests. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2013/04/130401181317.htm
American Academy of Neurology (AAN). "Tests to predict heart problems and stroke may be more useful predictor of memory loss than dementia tests." ScienceDaily. www.sciencedaily.com/releases/2013/04/130401181317.htm (accessed November 26, 2014).

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