Midlife cardiovascular risk factors and risk of dementia in late life

Rachel Whitmer, S. Sidney, J. Selby, S. Claiborne Johnston, K. Yaffe

Research output: Contribution to journalArticle

718 Citations (Scopus)

Abstract

Objective: To evaluate if midlife cardiovascular risk factors are associated with risk of late-life dementia in a large, diverse cohort. Method: The authors conducted a retrospective cohort study of 8,845 participants of a health maintenance organization who underwent health evaluations from 1964 to 1973 when they were between the ages of 40 and 44. Midlife cardiovascular risk factors included total cholesterol, diabetes, hypertension, and smoking. Diagnoses of dementia were ascertained by medical records from January 1994 to April 2003. Results: The authors identified 721 participants (8.2%) with dementia. Smoking, hypertension, high cholesterol, and diabetes at midlife were each associated with a 20 to 40% increase in risk of dementia (fully adjusted Cox proportional hazards model: HR 1.24, 95% CI 1.04 to 1.48 for hypertension, HR 1.26, 95% CI 1.08 to 1.47 for smoking, HR 1.42, 95% CI 1.22 to 1.66 for high cholesterol, and HR 1.46, 95% CI 1.19 to 1.79 for diabetes). A composite cardiovascular risk score was created using all four risk factors and was associated with dementia in a dose-dependent fashion. Compared with participants having no risk factors, the risk for dementia increased from 1.27 for having one risk factor to 2.37 for having all four risk factors (fully adjusted model: HR 2.37, 95% CI 1.10 to 5.10). Conclusion: The presence of multiple cardiovascular risk factors at midlife substantially increases risk of late-life dementia in a dose dependent manner.

Original languageEnglish (US)
Pages (from-to)277-281
Number of pages5
JournalNeurology
Volume64
Issue number2
DOIs
StatePublished - Jan 25 2005
Externally publishedYes

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Dementia
Smoking
Cholesterol
Hypertension
Health Maintenance Organizations
Proportional Hazards Models
Medical Records
Cohort Studies
Retrospective Studies
Health

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Midlife cardiovascular risk factors and risk of dementia in late life. / Whitmer, Rachel; Sidney, S.; Selby, J.; Claiborne Johnston, S.; Yaffe, K.

In: Neurology, Vol. 64, No. 2, 25.01.2005, p. 277-281.

Research output: Contribution to journalArticle

Whitmer, R, Sidney, S, Selby, J, Claiborne Johnston, S & Yaffe, K 2005, 'Midlife cardiovascular risk factors and risk of dementia in late life', Neurology, vol. 64, no. 2, pp. 277-281. https://doi.org/10.1212/01.WNL.0000149519.47454.F2
Whitmer, Rachel ; Sidney, S. ; Selby, J. ; Claiborne Johnston, S. ; Yaffe, K. / Midlife cardiovascular risk factors and risk of dementia in late life. In: Neurology. 2005 ; Vol. 64, No. 2. pp. 277-281.
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