Effects of alcohol and cigarettes on the function of frontal lobe in middle- and elderly-Japanese

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  • Nagahara Naoko
    Graduate School of Environmental Studies, Nagoya University
  • Okumura Miyuki
    School of Informatics and Science, Nagoya University
  • Ito Emi
    Graduate School of Environmental Studies, Nagoya University
  • Hatta Takeshi
    Graduate School of Environmental Studies, Nagoya University

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  • 日本人中高年齢者における飲酒と喫煙が前頭葉機能へ及ぼす影響
  • ニホンジン チュウコウネンレイシャ ニ オケル インシュ ト キツエン ガ ゼントウヨウ キノウ エ オヨボス エイキョウ

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In this study, independent and interactive effects of alcohol drinking and smoking on the function of frontal lobe in middle- and elderly-Japanese community dwellers were examined. The participants were 487 health individuals aged 40 to 86 years old. The letter fluency test to measures verbal executive function, and the D-CAT to measures information processing speed and sustain of attention were used as the measures of cognitive function. Analyses including age and years of education as covariates indicated that the intensity of drinking tended to influence on information processing speed, that is, light to moderate drinkers showed good performance in comparison with abstainers or heavy drinkers. The intensity of smoking also made a significant difference on the results of the letter fluency test, and light smokers showed a higher-level performance compared with other groups.

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