BACKGROUND: Adults with Fetal Alcohol Syndrome (FAS) experience many adverse health and social outcomes, yet their healthcare utilisation is under-researched. METHOD: This population-based descriptive cohort study utilised ICES provincial administrative health databases and Canadian Death Vital Statistics to identify adults with FAS via usage of hospital-based services (2002-2013) and examine their demographics, healthcare utilisation, mental health and addiction diagnoses, and mortality during follow-up (2014-2017). RESULTS: 565 adults with FAS were included in the cohort. During the follow-up period, 27% used in-patient psychiatric care
30% the emergency department 12 + times
28% were hospitalised at least once
and 17% used home care services. They displayed high rates of physical and mental health comorbidities, substance use disorders, history of abuse, and income from social assistance. CONCLUSION: Adults with FAS require accessible and extensive healthcare services to address their complex needs and improve long-term outcomes.