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Related Experiment Videos

Smoking, drinking, and thinking. The Zutphen Elderly Study

L J Launer1, E J Feskens, S Kalmijn

  • 1Department of Chronic Diseases and Environmental Epidemiology, National Institute for Public Health and Environmental Protection, Bilthoven, The Netherlands.

American Journal of Epidemiology
|February 1, 1996
PubMed
Summary
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Smoking is linked to worse cognitive function, especially in men with cardiovascular disease or diabetes. Moderate alcohol intake may offer some cognitive protection in this group, but more research is needed.

Area of Science:

  • Gerontology
  • Neuroscience
  • Epidemiology

Background:

  • Cognitive decline is a significant concern in aging populations.
  • The roles of lifestyle factors like smoking and alcohol consumption in cognitive health are complex and require further investigation.
  • Understanding how conditions like cardiovascular disease (CVD) and diabetes interact with these factors is crucial.

Purpose of the Study:

  • To investigate the cross-sectional and longitudinal associations of smoking and alcohol intake with cognitive status and decline.
  • To examine whether these associations are modified by the presence of CVD or diabetes.
  • To evaluate the impact of smoking and alcohol on cognitive function in elderly men over a 3-year period.

Main Methods:

  • Data from the Zutphen Elderly Study (1990-1993) including 489 men in 1990 and 333 in 1993.

Related Experiment Videos

  • Cognitive function assessed using the Mini-Mental State Examination (MMSE) in both years.
  • Statistical analyses adjusted for age, education, smoking status, and alcohol intake, considering CVD/diabetes status.

    • Main Results:

    • Current smokers performed worse on the MMSE (20% more errors) compared to never smokers, after adjusting for confounders.
    • The greatest cognitive decline was observed in men with CVD/diabetes who were current or never smokers.
    • Low-to-moderate alcohol intake (1-2 drinks/day) was associated with a significantly lower risk of poor cognitive function (MMSE ≤ 25) in men with CVD/diabetes compared to abstainers.

    Conclusions:

    • Findings do not support a protective effect of smoking on cognitive function; smoking may be detrimental, particularly for individuals with CVD/diabetes.
    • Moderate alcohol consumption might have an acute beneficial effect on cognitive function in men with CVD/diabetes.
    • Potential selection bias and unmeasured confounding factors warrant caution when interpreting the results regarding alcohol's effects.