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Published on: October 22, 2020
Cigarette smoking and cognitive health in elderly Japanese
Ryo Hotta1, Takehiko Doi2, Hiroyuki Shimada2
1Department of Functioning Activation, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Aichi, Japan;,
Objective:
To examine the relationships between smoking status and various domains of cognitive function in community-dwelling elderly subjects.
Methods:
Participants (N = 4348) were asked about smoking status, demographic variables, and lifestyle factors, and underwent multidimensional neurocognitive tests.
Results:
All analyses were conducted separately by sex. Women never smokers exhibited significantly better scores than past and/or current smokers in some neurocognitive tests. Among men, never smokers had significantly higher scores, such as in the Symbol Digit Substitution Test. Multiple linear regression analysis showed that pack-years (history of smoking) were significantly associated with the Symbol Digit Substitution Test in men.
Conclusions:
Smoking status may be associated with a decline in processing speed, and this decline varies by sex.
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