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Pulmonary function measures as predictors and correlates of cognitive functioning in later life
1Department of Epidemiology and Biostatistics, Marshfield Medical Research Foundation, Marshfield Clinic, WI, USA.
American Journal of Epidemiology
|April 15, 1996
Summary
Good lung function in middle age, measured by forced expiratory volume (FEV1), is linked to better cognitive abilities later in life. This study highlights a potential connection between respiratory health and brain function over time.
Area of Science:
- Epidemiology
- Gerontology
- Respiratory Medicine
Background:
- Cognitive decline is a growing concern in aging populations.
- The relationship between physiological functions and cognitive health requires further investigation.
- Pulmonary function is a key indicator of overall physiological health.
Purpose of the Study:
- To investigate the association between pulmonary function in midlife and cognitive function in later life.
- To determine if pulmonary function predicts cognitive abilities in older age.
- To explore the influence of age and other factors on this relationship.
Main Methods:
- A cohort of 3,036 Japanese-American men was studied.
- Pulmonary function was assessed using forced expiratory volume in 1 second (FEV1) between 1965-1968.
- Cognitive function was measured using the Cognitive Abilities Screening Instrument (CASI) between 1991-1993.
Main Results:
- Baseline FEV1 showed a significant positive correlation with follow-up CASI scores (r=0.22, p=0.0001).
- FEV1 remained a significant predictor of later-life cognitive function after adjusting for covariates.
- Men with higher FEV1 levels had significantly greater mean CASI scores.
Conclusions:
- Pulmonary function impairment in midlife may be associated with cognitive function impairment in later life.
- Maintaining good respiratory health could be important for preserving cognitive function.
- The association between pulmonary function and cognition is influenced by age at assessment.