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Obesity as a risk factor for colorectal polyps in Japanese patients
  1. M Tashiro,
  2. T Akiyama,
  3. I Yoshikawa,
  4. K Kume,
  5. M Otsuki
  1. University of Occupational and Environmental Health, School of Medicine, 1-1 Iseigaoka, Yahatanishi-ku Kitakyushu, Japan
  1. Correspondence to:
    Professor M Otsuki;

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Colorectal cancer (CRC) is one of the most common malignant diseases in developed countries. Recent epidemiological studies1 suggest that CRC is associated with obesity (Gut 2002;51:191–4).

Although primary prevention of CRC via dietary measures is controversial, secondary prevention by interrupting the adenoma-carcinoma sequence is possible. One cross sectional study2 and a case control study3 have demonstrated the association between obesity and colorectal adenomas in men2 and women,3 respectively, whereas another study failed to show any association.4 Although cross sectional studies in Japan have demonstrated an …

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