Cigarette Smoking and Alcohol Consumption Associated with Gastro-Oesophageal Reflux Disease in Japanese Men

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Abstract
Background: Associations between lifestyle factors and gastro-oesophageal reflux disease (GORD) have been conflicting. We aimed to examine these associations in Japanese men. Methods: We performed a cross-sectional study of Japanese male workers who visit a clinic for a routine health check-up and asked them to fill out a self-report questionnaire. Logistic regression was used to calculate odds ratios (OR) with 95% confidence intervals (CI) for GORD, defined as heartburn and/or acid regurgitation at least twice weekly. Results: Of the 4095 eligible subjects, 276 (6.7%) were diagnosed as having GORD. Current smoking was significantly associated with GORD compared with non-smoking (OR r = r 1.35, 95% CI, 1.01-1.82). Moderate drinking (16-37 r mL/day) and heavy drinking ( S 38 r mL/day) were also associated with GORD, while age and body mass index were not. After adjustment for age, daily alcohol consumption and body mass index, an increase in number of pack-years of cigarette smoking was significantly associated with an increased OR of GORD ( P for trend r = r 0.034), and the OR for persons whose number of pack-years of cigarette smoking was more than 20.1 was 1.45 (CI 1.04-2.04) compared with non-smokers. Conclusion: Cigarette smoking and alcohol consumption are associated with an increased odds ratio for GORD in Japanese men.

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