Association between plant-based dietary index and gallstone disease: A cross sectional study from NHANES
Luyang Li1, Chengli Liu1,2,3, Tian Xia3
1Postgraduate Training Base of Air Force Medical Center, China Medical University, Beijing, China.
Background:
The relationship between plant-based diets and gallstone disease has been debated. This study aimed to shed light on the association between plant-based dietary index and the risk of developing gallstone disease.
Methods:
Eligible participants were selected from National Health and Nutrition Examination Survey (NHANES) 2017-2020. Three plant-based diet indexes (PDI, healthy PDI, unhealthy PDI) were calculated using data from two NHANES 24-h dietary recall interviews. Restricted Cubic Spline and multivariate logistic regression were used to analyze the associations. Subgroup analysis was adopted to make the results more robust.
Results:
A total of 5673 eligible participants were analyzed. After adjusting for various confounding variables, uPDI was positively associated with gallstone disease (OR = 1.53, 95%CI: 1.02-2.29). No association was found between PDI/hPDI and gallstone disease (p > 0.05). The results of subgroup analysis did not show any positive association between uPDI and gallstones in specific groups.
Conclusion:
Our study shows that the elevated uPDI are linked to a higher risk of gallstone disease.
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