Twins Discordant for Parkinson’s Disease: A 10-Year Longitudinal Follow-Up of Mortality, Clinical and Lifestyle Features, Nutritional Status, and Dietary Habits

Background/Objectives: Twins discordant for Parkinson’s disease (PD) share genetic background and early-life exposures, offering a model for non-genetic determinants of disease. We aimed to evaluate longitudinally the mortality, clinical and lifestyle features, nutritional status and dietary habits of a cohort of PD-discordant twins, with specific attention to the monozygotic (MZ) subgroup.