BMJ Open. 2023 Dec 10;13(12):e076976. doi: 10.1136/bmjopen-2023-076976. ABSTRACT PURPOSE: The Finnish Retirement and Aging (FIREA) Study was set up to study changes in health behavioural and cardiometabolic risk factors across retirement transition, and to examine the long-term consequences of work and retirement on health and functioning with advancing age. PARTICIPANTS:…