Summary Background : Body mass index (BMI) is a risk factor for gastro‐oesophageal reflux but may simply be explained by diet and lifestyle. Aim : We aimed to determine the contribution of BMI, diet and exercise to GER. Methods : Community subjects (n = 211, mean age =36 years, 43% males) completed validated questionnaires on gastro‐oesophageal reflux, energy expenditure (Harvard Alumni Activity Survey), dietary intake (Harvard Food Frequency Questionnaire) and measures of personality and life event stress. Diet, exercise, BMI and other potential risk factors for reflux were analysed using logistic regression analyses. Results : The overall mean (±s.d.) BMI was 26.6 (±5.7); 79 (37%) reported infrequent ( 25, 10% reported frequent reflux compared to 4% of those with BMI ≤ 25. In a model which included age, sex and Symptom Checklist‐90 somatisation T‐score, BMI was associated with reflux (OR per 5 units = 1.9, 95% CI: 1.2, 3.0). In models which included diet and exercise variables, BMI but not diet or exercise was associated with reflux. Conclusion : BMI may be associated with symptomatic gastro‐oesophageal reflux independent of diet and exercise.
Alimentary Pharmacology & Therapeutics – Wiley
Published: Sep 1, 2004
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