Risk of somatic disease and mortality in individuals of parents with alcohol use disorder: a register-based cohort study.

ABSTRACT

AIMS: To estimate the risks of 12 types of somatic disease-alcohol-related, blood, cancer, circulatory, digestive, endocrine and metabolic, genitourinary, infectious, musculoskeletal, nervous, respiratory and skin-in individuals with parental alcohol use disorder (AUD) versus a reference population, and to estimate the risks of all-cause mortality and of death from an alcohol-related cause. DESIGN: Matched cohort study followed-up through nation-wide health registries. Cox proportional hazards models were used to estimate hazard ratios (HRs) with 95% confidence intervals (CIs). SETTING: Denmark. PARTICIPANTS: A total of 14 008 individuals born 1962-2003 of parents with AUD and 139 087 reference offspring randomly selected from the Danish Civil Registration System were followed from their 15th birthday and onward during 1970-2018. Follow-up time ranged between 2 423 955 and 3 208 366 person-years for somatic diseases and was 3 214 411 person-years for all-cause and alcohol-related mortality. MEASUREMENTS Information on somatic disease was obtained from the Danish National Patient Registry. Causes of death were obtained from the Danish Cause of Death Registry. FINDINGS: Individuals of parents with AUD had a higher risk of alcohol-related diseases (HR = 2.70, 95% CI = 2.24-3.24) compared with the reference individuals. Higher HRs among individuals with parental AUD compared with reference individuals were also observed in all other somatic diseases except for cancer. All-cause mortality (HR = 1.80, 95% CI = 1.63-2.00) and alcohol-related mortality (HR = 3.28, 95% CI = 2.11-5.08) were higher among individuals of parents with AUD compared with the reference individuals. No significant differences were found in relation to the gender of either parents or offspring. CONCLUSIONS: In Denmark, parental alcohol use disorder appears to predict alcohol-related and non-alcohol-related somatic morbidity and mortality in offspring.