In this study, doctors from Australia and the United States assessed the association between body mass index (BMI) and specific GI symptoms in the community.
They assessed 777 subjects selected randomly from the population in Sydney, Australia. Subjects completed a validated questionnaire.
The team evaluated the association of each GI symptom with BMI using logistic regression analysis.
Overall, 22% of subjects were obese.
In univariate analysis, the team found associations between increased BMI category and heartburn (OR 1.9), acid regurgitation (OR 2.1), increased bloating (OR 1.3), increased stool frequency (OR 1.4), loose and watery stools (OR 1.5) and upper abdominal pain (OR = 1.3).
|Early satiety was associated with a lower BMI category.|
|Neurogastroenterology and Therapeutics|
They found that early satiety was associated with a lower BMI category but this did not remain significant.
Lower abdominal pain, postprandial fullness, nausea and vomiting were not associated with BMI category.
Using regression analysis, the team found that older age, less early satiety, and increased stool frequency and heartburn were all independently associated with increasing BMI.
Dr Talley and colleagues concluded, "Heartburn and diarrhea were associated with increased BMI, while early satiety was associated with a lower BMI in this population".