Antidepressant use and colorectal cancer risk: a Danish population-based case-control study

D P Cronin-Fenton, A H Riis, T L Lash, S O Dalton, S Friis, D Robertson, Henrik Toft Sørensen

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    Abstract

    Background:Earlier research suggests that use of selective serotonin reuptake inhibitors (SSRIs), but not tricyclic antidepressants (TCAs), reduces the risk of colorectal cancer (CRC).Methods:We conducted a population-based case-control study to investigate the association between antidepressant use and CRC risk. Cases were diagnosed with a first primary CRC from 1991 through 2008. We selected 10 population controls matched to cases on sex, birth year, and residence from the Danish Civil Registration System using risk-set sampling. We estimated the odds ratios (ORs) and 95% confidence intervals (CIs) associating antidepressant use with colorectal cancer occurrence, controlling for potential confounders.Results:The study included 9979 cases and 99 790 controls. We found no notable reduction in CRC risk in ever users (2 prescriptions) of TCAs (OR=0.94; 95% CI: 0.84, 1.05), SSRIs (OR=0.97; 95% CI: 0.90, 1.05), or other antidepressants (OR=0.95; 95% CI: 0.83, 1.07). Associations for recent and former use of antidepressants were also near null. Intensity of antidepressant use (number of pills divided by total duration of use), regardless of duration, was not associated with CRC risk.Conclusions:We found no evidence that antidepressant use substantially reduces the risk of colorectal cancer.British Journal of Cancer advance online publication, 28 September 2010; doi:10.1038/sj.bjc.6605911 www.bjcancer.com.
    Original languageEnglish
    JournalBritish Journal of Cancer
    Volume104
    Issue1
    Pages (from-to)188-192
    Number of pages5
    ISSN0007-0920
    DOIs
    Publication statusPublished - 2011

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