Cigarette Smoking and Colorectal Cancer Risk in the European Prospective Investigation Into Cancer and Nutrition Study

Research output: Contribution to journalArticle

Abstract

BACKGROUND & AIMS: There has been consistent evidence for a relationship between smoking and colorectal cancer (CRC), although it is not clear whether the colon or rectum is more sensitive to the effects of smoking. We investigated the relationships between cigarette smoking and risk of CRC and tumor location. METHODS: We analyzed data from 465,879 participants in the European Prospective Investigation into Cancer and Nutrition (EPIC) study; 2741 developed CRC during the follow-up period (mean, 8.7 years). Cox proportional hazard regression models were used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs). RESULTS: The risk of colon carcinoma was increased among ever smokers (HR, 1.18; 95% CI, 1.06-1.32) and former cigarette smokers (HR, 1.21; 95% CI, 1.08-1.36), compared with never smokers; the increased risk for current smokers was of borderline significance (HR, 1.13; 95% Cl, 0.98-1.31). When stratified for tumor location, the risk of proximal colon cancer was increased for former (HR, 1.25; 95% CI, 1.04-1.50) and current smokers (HR, 1.31; 95% CI, 1.06-1.64), but the risks for cancers in the distal colon or rectum were not. Subsite analyses showed a nonsignificant difference between the proximal and distal colon (P=.45) for former smokers and a significant difference for current smokers (P=.02). For smokers who had stopped smoking for at least 20 years, the risk of developing colon cancer was similar to that of never smokers. CONCLUSIONS: Ever smokers have an increased risk of colon cancer, which appeared to be more pronounced in the proximal than the distal colon location.

Details

Authors
  • Anke M. Leufkens
  • Franzel J. B. Van Duijnhoven
  • Peter D. Siersema
  • Hendriek C. Boshuizen
  • Alina Vrieling
  • Antonio Agudo
  • Inger T. Gram
  • Elisabete Weiderpass
  • Christina Dahm
  • Kim Overvad
  • Anne Tjonneland
  • Anja Olsen
  • Marie-Christine Boutron-Ruault
  • Francoise Clavel-Chapelon
  • Sophie Morois
  • Domenico Palli
  • Sara Grioni
  • Rosario Tumino
  • Charlotta Sacerdote
  • Amalia Mattiello
  • Silke Herman
  • Rudolf Kaaks
  • Annika Steffen
  • Heiner Boeing
  • Antonia Trichopoulou
  • Pagona Lagiou
  • Dimitrios Trichopoulos
  • Petra H. Peeters
  • Carla H. van Gils
  • Henk van Kranen
  • Eliv Lund
  • Vanessa Dumeaux
  • Dagrun Engeset
  • Laudina Rodriguez
  • Maria-Jose Sanchez
  • Maria-Dolores Chirlaque
  • Aurelio Barricarte
  • Bethany van Guelpen
  • Goran Hallmans
  • Kay-Tee Khaw
  • Nick Wareham
  • Konstantinos K. Tsilidis
  • Kurt Straif
  • Maria Leon-Roux
  • Paul Vineis
  • Teresa Norat
  • Elio Riboli
  • H. Bas Bueno-de-Mesquita
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Gastroenterology and Hepatology

Keywords

  • Colorectal Cancer, Tumor Location, Tobacco, Risk Factor
Original languageEnglish
Pages (from-to)137-144
JournalClinical Gastroenterology and Hepatology
Volume9
Issue number2
Publication statusPublished - 2011
Publication categoryResearch
Peer-reviewedYes