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Apolipoprotein E epsilon 4 magnifies lifestyle risks for dementia: a population-based study
Stockholm University, Faculty of Social Sciences, Department of Social Work.
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2008 (English)In: Journal of Cellular and Molecular Medicine (Print), ISSN 1582-1838, Vol. 12, no 6B, 2762-2771 p.Article in journal (Refereed) Published
Abstract [en]

The risk of dementia and Alzheimer's disease (AD) probably results from an interaction between genetic and environmental factors. The aim of this study was to investigate the effects and putative interactions between the apoE epsilon 4 allele and lifestyle related risk factors for dementia and AD. Participants of the Cardiovascular Risk Factors, Aging, and Dementia (CAIDE) study were derived from random, population-based samples previously studied in 1972, 1977, 1982 or 1987. After an average follow-up of 21 years, 1449 individuals (72.5%) aged 65-79 years were re-examined in 1998. The apoE epsilon 4 allele was an independent risk factor for dementia/AD even after adjustments for sociodemographic, lifestyle and vascular factors (odds ratio [OR] = 2.83, 95% confidence interval [CI] epsilon 1.61-4.97). Physical inactivity, alcohol drinking and smoking increased the risk of dementia/AD particularly among the apoE epsilon 4 carriers. Furthermore, low-moderate intake of polyunsaturated, and moderate-high intake of saturated fats were associated with an increased risk of dementia/AD more pronouncedly among apoE epsilon 4 carriers. Composite effect of the lifestyle factors was particularly seen among the epsilon 4 carriers (OR = 11.42, 95% CI = 1.94-67.07 in the 4(th) quartile). Physical inactivity, dietary fat intake, alcohol drinking and smoking at midlife are associated with the risk of dementia and AD, especially among the apoE epsilon 4 carriers. The apoE epsilon 4 carriers may be more vulnerable to environmental factors, and thus, lifestyle interventions may greatly modify dementia risk particularly among the genetically susceptible individuals.

Place, publisher, year, edition, pages
2008. Vol. 12, no 6B, 2762-2771 p.
Keyword [en]
dementia, Alzheimer's disease, ApoE, physical activity, dietary fat intake, alcohol drinking, smoking
URN: urn:nbn:se:su:diva-57723DOI: 10.1111/j.1582-4934.2008.00296.xISI: 000262311700019OAI: diva2:418258
authorCount :11Available from: 2011-05-20 Created: 2011-05-16 Last updated: 2011-05-20Bibliographically approved

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