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Leisure-time physical activity on lifelong trajectories of body mass index and obesity risk throughout life: multivariable regression and Mendelian randomization analyses using real-world data from the CORDELIA-Catalunya Study

2026-02-25 epidemiology Title + abstract only
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BackgroundEvidence on how leisure-time physical activity (LTPA) improves lifetime body mass index (BMI) remains fragmented and prone to confounding. MethodsWe pooled 14,993 adults (30-90 y; 52.7% women; cohorts: REGICOR-ACRISC, ILERVAS, ARTPER) with baseline estimated LTPA (moderate-to-vigorous LTPA [MVLTPA] in REGICOR-ACRISC), genotype, and repeated BMI values from electronic health records (1990-2024, 36,157 measures). LTPA was categorized into cohort-specific quartiles; MVLTPA in 0, <100, <2...

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