title: Meat consumption and cooking practices and the risk of colorectal cancer.
abstract: OBJECTIVE
  The association between meat consumption and the risk of colorectal cancer (CRC) has been controversial. One of the difficulties in determining this association has been measurement of different attributes of meat consumption, including cooking methods and level of doneness.
  
  
  METHODS
  We investigated the association between meat consumption and cooking practices and the risk of CRC in a population-based case-control study in the Western Australian Bowel Health Study. From July 2005 to February 2007, 567 incident CRC cases and 713 controls, who were frequency matched to cases for age- and sex, completed questionnaires on lifestyle and meat consumption. Estimated odds ratios (ORs) comparing meat consumption quartile groups were obtained from multivariate logistic regression models.
  
  
  RESULTS
  The amount of red baked meat consumed had a statistically significant inverse trend of association with CRC (Q4 OR=0.73 95% confidence interval 0.53-1.01). When frequency was multiplied by serving size and by doneness, the association remained protective but was no longer statistically significant. The protective trends for red pan-fried meat were also borderline statistically significant. There were no other statistically significant or meaningful associations with any of the types of meat cooked by any method and the risk of CRC.
  
  
  CONCLUSIONS
  Our data do not support the hypothesis that meat consumption is a risk factor for CRC.
authors.affiliation: School of Population Health, University of Western Australia, Nedlands, Australia.
authors.forename: S M
authors.initials: SM
authors.lastname: Tabatabaei
authors.forename: L
authors.initials: L
authors.lastname: Fritschi
authors.forename: M W
authors.initials: MW
authors.lastname: Knuiman
authors.forename: T
authors.initials: T
authors.lastname: Boyle
authors.forename: B J
authors.initials: BJ
authors.lastname: Iacopetta
authors.forename: C
authors.initials: C
authors.lastname: Platell
authors.forename: J S
authors.initials: JS
authors.lastname: Heyworth
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D015179:Colorectal Neoplasms / Q000209:etiology*; D003296:Cooking / Q000379:methods*; D004032:Diet / Q000009:adverse effects*; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008460:Meat / Q000009:adverse effects*; D008875:Middle Aged; D016017:Odds Ratio; D012307:Risk Factors; D011795:Surveys and Questionnaires; D014904:Western Australia