What determines mortality risk in male former cigarette smokers?
Y Ben-Shlomo,
G D Smith,
M J Shipley and
M G Marmot
Department of Epidemiology and Public Health, University College London, England.
OBJECTIVES. The purpose of this study was to examine what factorsdetermine the mortality experience of male ex-cigarette smokers,those who no longer smoke at all and those who changed to pipeor cigar smoking. METHODS. A cohort study was undertaken with18-year mortality data on 19,018 men. RESULTS. Ex-cigarettesmokers had an intermediate mortality risk compared with neverand current smokers. Ex-cigarette smokers who switched to pipesmoking had higher mortality than those who no longer smokedat all. The mortality rates for pipe and cigar smokers who wereformer cigarette smokers were higher than those for pipe orcigar smokers who had never smoked cigarettes. Ex-cigarettesmokers who consumed more than 20 cigarettes per day for morethan 20 years experienced increased mortality for both coronaryheart disease and neoplasms, even after 30 years of cessation.CONCLUSIONS. These results support the notion that an elevatedmortality risk may be seen for ex-cigarette smokers, even afterthey have given up smoking for many years. Ex-cigarette smokerswho change to a pipe have a greater mortality risk than thosewho no longer smoke at all.
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