[Internal Migration and Mental Health - Relevant Factors 20 and 30 years after Unification: Results of a Longitudinal Study in German].

Aim The aim of the present study was to determine the relevant factors in the mental health of people who experienced internal migration in comparison with people who did not. Methods Data from a longitudinal study in Saxony were used to compare the psychological distress of individuals who migrated internally with that of those who did not in 2010 and 2020. Bootstrapping-based mediation analysis was applied to examine possible mediators between internal migration and mental health.Results Individuals who experienced internal migration reported less mental distress compared to those who did not in 2010, but not in 2020, but these effects disappeared after including covariates and mediators. Important mediators in 2010 were life situation, political solidarity with FRG, winner of German Unification and job security; in 2020, these were threat of old-age poverty and experiences with system.Discussion Internal migration influences mental distress through different factors. Especially the current life circumstances play a crucial role.