Genetic and Environmental Effects on BMI Fluctuation Across the Adult Life Course and Its Associations With Baseline BMI and BMI Change: An Individual-Based Study of 14 Longitudinal Twin Cohorts. - Obeso Fernandez A; Eriksson A; Drouard G; Jelenkovic A; Aaltonen S; Ollikainen M; Spector T; Mangino M; Christensen K; Skytthe A; Kyvik KO; Medda E; et al. (Diabetes, obesity & metabolism, 2026)