ArticleFrontiers in nutrition2025
The mediating role of body mass index in the association between unprocessed or minimally processed foods and gallstones.
Article in Frontiers in nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: The extent of food processing significantly impacts human health, with ultra-processed foods (UPFs) linked to numerous adverse health outcomes. In contrast, research on unprocessed or minimally processed foods (MPFs) and their association with gallstones remains scarce. This study aimed to investigate the relationship between MPF intake and gallstones in U.S. adults. Methods: We conducted a cross-sectional analysis using data from the National Health and Nutrition Examination Survey (NHANES, 2017-2023). MPF intake was assessed according to the NOVA classification system. Survey-weighted logistic regression, restricted cubic spline models, and mediation analyses were employed to evaluate the association between MPF consumption and gallstones disease. Results: Among 11,779 U.S. adults, 1,303 cases of gallstones disease were identified (weighted prevalence: 9.8%). Elevated percentage contribution of MPF was significantly associated with a reduced likelihood of gallstones [model 1, odds ratio (OR): 0.40, 95% confidence interval (CI): 0.21-0.78], and this inverse relationship persisted after full adjustment (model 3; OR: 0.28, 95% CI: 0.09-0.84). Compared to the lowest quartile (Q1), the highest quartile (Q4) of MPF consumption showed significantly lower odds of gallstones (OR: 0.72, 95% CI: 0.53-0.98). A non-linear, inverted U-shaped relationship was observed between MPF intake and gallstones (overall Conclusion: Higher MPF consumption is associated with a lower risk of gallstones disease, with BMI partially mediating this relationship.
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