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Midlife vascular risk factors and late-life mild cognitive impairment: A population-based study

M Kivipelto1, E L Helkala, T Hänninen

  • 1Department of Neuroscience and Neurology, University of Kuopio, Finland. miia.kivipelto@uku.fi

Neurology
|June 27, 2001
PubMed
Abstract

Insights

Midlife high cholesterol is a significant risk factor for developing mild cognitive impairment (MCI) later in life. This study investigated MCI prevalence and risk factors in an elderly Finnish population.

Area of Science:

  • Neurology
  • Gerontology
  • Epidemiology

Background:

  • Mild cognitive impairment (MCI) is a known predictor of Alzheimer's Disease (AD).
  • Vascular risk factors are implicated in cognitive decline and AD development.
  • The specific role of vascular factors in MCI and MCI prevalence remain understudied.

Purpose of the Study:

  • To assess the impact of midlife elevated cholesterol and blood pressure on subsequent MCI development.
  • To determine the prevalence of MCI in an elderly Finnish population using Mayo Clinic criteria.

Main Methods:

  • Utilized longitudinal data from population-based Finnish surveys (1972-1987).
  • Re-examined 1,449 subjects (aged 65-79) after an average 21-year follow-up in 1998.
  • Applied Mayo Clinic Alzheimer's Disease Research Center criteria for MCI diagnosis.

Main Results:

  • MCI was diagnosed in 6.1% (82 subjects) of the elderly population (average age 72).
  • Midlife elevated serum cholesterol (> or =6.5 mmol/L) significantly predicted MCI (OR, 1.9; 95% CI, 1.2-3.0), adjusted for age and BMI.
  • Elevated systolic blood pressure showed a near-significant association with MCI.

Conclusions:

  • Midlife vascular risk factors play a role in the development of late-life MCI.
  • Elevated cholesterol in midlife is a key modifiable risk factor for MCI.
  • Findings highlight the importance of managing vascular health for cognitive function in aging.

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