Parental Mental Illness and Offspring's Risk of Autoimmune Diseases

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The 1987 Finnish Birth Cohort study yields longitudinal nationwide follow-up data that include a complete census of children born in a single year. A total 58,551 offspring are included in this study and, of these 57,752 had a known father. Offspring who had used psychotropic medication between the ages of 9 and 24 years, more often had parents who had experienced a greater number of somatic illnesses when their child was aged fewer than 9, compared to offspring without any use of psychotropic medication. The specific parental somatic illnesses early in life, for example disorders of female tract (OR 1.12, 95%CI 1.01–1.23), pregnancy with abortive outcome (1.18, 1.09–1.28), paternal acute infections (1.20, 1.05–1.38), and paternal symptoms, signs, and ill-defined conditions (1.21, 1.03–1.42), were found to be associated with psychotropic medication treatment using parental-related determinants; death, education, receipt of social assistance and psychiatric inpatient care as covariates. This suggests that these specific parental somatic illnesses can affect psychological well-being of the offspring. Preventive actions and support for the child should be provided in situations where a parent with a somatic illness has limited ability to care for and rear their child.

Mental illness has been previously linked with autoimmune diseases, yet the associations between parental mental illness and offspring's risk of autoimmune diseases is largely unknown. We conducted a population-based cohort study of 2,192,490 Swedish children born between 1991 and 2011 and their parents to determine the associations between parental mental illness and risk of autoimmune diseases among the offspring. Time-dependent diagnoses of parental mental illness (psychosis, alcohol/drug misuse, depression, anxiety, eating disorders, personality disorders, attention deficit hyperactivity disorder, autism spectrum disorder) and offspring autoimmune diseases (type 1 diabetes (T1D), juvenile idiopathic arthritis (JIA), systemic lupus erythematosus, psoriasis, multiple sclerosis, inflammatory bowel disease (IBD), coeliac disease) were identified from inpatient/outpatient healthcare visits. Associations were measured by hazard ratios (HRs) adjusted for potential confounders. Overall, parental mental illness was associated with a small increase in risk of offspring's autoimmune diseases (HR 1.05, 95% CI 1.02–1.08). However, parental common mental disorder (anxiety/depression) was associated with higher risk of JIA, psoriasis, and T1D (HR T1D 1.11, 95% CI 1.01–1.22), while maternal psychosis with reduced risk of coeliac disease (HR 0.68, 95% CI 0.49–0.95) and paternal alcohol/drug misuse with reduced risk of IBD (HR 0.80, 95% CI 0.64–0.99). Maternal eating disorders were associated with a markedly increased risk for T1D (HR 1.41, 95% CI 1.05–1.89).

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Marry

Journal Coordinator
Journal of Annals of Behavioural Science