title: Dietary patterns and colorectal adenomas in Japanese men: the Self-Defense Forces Health Study.
abstract: The role of dietary patterns in colorectal carcinogenesis remains unclear in Asian populations. Using 1999-2002 data, the authors investigated the association between dietary patterns and colorectal adenomas in 1,341 Japanese men who underwent total colonoscopy. Information about diet was obtained using a 74-item food frequency questionnaire prior to the colonoscopy. Three dietary patterns were generated by factor analysis: 1) a high-dairy, high-fruit and -vegetable, high-starch, low-alcohol pattern; 2) an "animal food" pattern; and 3) a Japanese pattern. Logistic regression analysis was used to estimate the odds ratio of having colorectal adenomas with the adjustment for potential confounding variables including body mass index, smoking, alcohol, and leisure-time physical activities. A significant inverse association was found for the high-dairy, high-fruit and -vegetable, high-starch, low-alcohol pattern; the odds ratios for the second, third, and fourth quartiles were 0.97 (95% confidence interval: 0.70, 1.36), 0.71 (95% confidence interval: 0.50, 1.01), and 0.62 (95% confidence interval: 0.43, 0.90), respectively, compared with the lowest (p(trend) = 0.003). Similar associations were observed for larger adenomas or for each subsite of the colorectum. The Japanese and "animal food" patterns were not clearly associated with colorectal adenomas. A dietary pattern including greater consumption of dairy products and fruits and vegetables with low alcohol consumption may be associated with decreased risk of colorectal adenomas.
authors.affiliation: Department of Preventive Medicine, Faculty of Medical Sciences, Kyushu University, Higashiku, Fukuoka 812-8582, Japan. mizoue@phealth.med.kyushu-u.ac.jp
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Mizoue
authors.forename: Taiki
authors.initials: T
authors.lastname: Yamaji
authors.forename: Shinji
authors.initials: S
authors.lastname: Tabata
authors.forename: Keizo
authors.initials: K
authors.lastname: Yamaguchi
authors.forename: Eiichi
authors.initials: E
authors.lastname: Shimizu
authors.forename: Masamichi
authors.initials: M
authors.lastname: Mineshita
authors.forename: Shinsaku
authors.initials: S
authors.lastname: Ogawa
authors.forename: Suminori
authors.initials: S
authors.lastname: Kono
mesh_terms: D000236:Adenoma / Q000209:etiology*; D044466:Asian People; D003110:Colonic Neoplasms / Q000209:etiology*; D003430:Cross-Sectional Studies; D004032:Diet / Q000009:adverse effects*; D004034:Diet Surveys; D005247:Feeding Behavior / Q000208:ethnology; D005502:Food / Q000145:classification; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000209:etiology*; D012307:Risk Factors