title: Helicobacter pylori infection concomitant with metabolic syndrome further increase risk of colorectal adenomas.
abstract: OBJECTIVE
  To investigate the association of colorectal adenomas with both Helicobacter pylori (H. pylori) infection and metabolic syndrome.
  
  
  METHODS
  Using a cross-sectional hospital-based study, we analyzed physical examination data from 9311 healthy subjects with overnight physical examinations performed between January 2004 and December 2006. Examined data included gender, age, life style, anthropometric measurements, blood pressure, biochemical and hematological studies, H. pylori infection detected by esophagogastroduodenoscopy and biopsy urease tests, and colorectal adenomas detected with a complete total colonoscopy.
  
  
  RESULTS
  The prevalence values for H. pylori infection, metabolic syndrome, and colorectal adenoma were 39.2%, 18.7%, and 20.7%, respectively. Colorectal adenoma risk factors included male gender [odd ratio (OR): 2.005, 95% confidence interval (CI): 1.740-2.310, P < 0.001], advanced age (OR: 1.046, 95% CI: 1.040-1.052, P < 0.001), smoking (OR: 1.377, 95% CI: 1.146-1.654, P = 0.001), increased body fat (OR: 1.016, 95% CI: 1.007-1.026, P = 0.001), higher white blood cell count (OR: 1.038, 95% CI: 1.005-1.073, P = 0.025), H. pylori infection (OR: 1.366, 95% CI: 1.230-1.517, P < 0.001), and metabolic syndrome (OR: 1.408, 95% CI: 1.231-1.610, P < 0.001). In addition, concomitant H. pylori infection with metabolic syndrome further increased the probability of colorectal adenomas.
  
  
  CONCLUSIONS
  Our study revealed H. pylori infection with concomitant metabolic syndrome might further increase the risk of colorectal adenomas.
authors.affiliation: Department of Family Medicine, Buddhist Dalin Tzu Chi General Hospital, Dalin, Chiayi 62247, Taiwan, China.
authors.forename: Ying-Lung
authors.initials: YL
authors.lastname: Lin
authors.forename: Jui-Kun
authors.initials: JK
authors.lastname: Chiang
authors.forename: Shih-Min
authors.initials: SM
authors.lastname: Lin
authors.forename: Chih-En
authors.initials: CE
authors.lastname: Tseng
mesh_terms: D000236:Adenoma / Q000453:epidemiology / Q000209:etiology* / Q000382:microbiology; D016009:Chi-Square Distribution; D002681:China / Q000453:epidemiology; D015179:Colorectal Neoplasms / Q000453:epidemiology / Q000209:etiology* / Q000382:microbiology; D003430:Cross-Sectional Studies; D005260:Female; D016481:Helicobacter Infections / Q000150:complications* / Q000453:epidemiology / Q000382:microbiology; D016480:Helicobacter pylori / Q000472:pathogenicity*; D006769:Hospitals, General; D006801:Humans; D016015:Logistic Models; D008297:Male; D024821:Metabolic Syndrome / Q000150:complications* / Q000453:epidemiology; D008875:Middle Aged; D016017:Odds Ratio; D015995:Prevalence; D018570:Risk Assessment; D012307:Risk Factors