Diagnoses of mental health disorders among Norwegian youth and young adults with immigrant parents

Abstract Introduction Adolescence and early adulthood are associated with an increase in mental health problems. Migration is also a risk factor for mental disorders. Yet, there is a notable gap in research concerning the mental well-being of descendants of immigrants. This study investigates the risk of a diagnosis of a mental health disorder among those aged 16-30 years, born in Norway with at least one immigrant parent. Methods Data were sourced from the Medical Birth Registry of Norway, the Norwegian Patient Register, and Statistics Norway. Cox proportional hazard regressions were used to estimate hazard ratios (HR) of being diagnosed with different mental disorders, in total and by parental region of origin, compared to individuals of Norwegian background. Analyses were adjusted for sex, year of birth, and parental education. Results Individuals with two immigrant parents had a lower risk of most mental disorder diagnoses, while those of one immigrant parent had a higher risk. With the exception of schizophrenia, individuals with two immigrant parents had a lower risk of most mental disorder diagnoses compared to those with Norwegian-born parents. The HR for the risk of a diagnosis of anxiety for those with two immigrant parents was: 0.79 [95% CI 0.76 - 0.81], with immigrant mother: 1.07 [95% CI 1.04-1.10], with immigrant father: 1.28 [95% CI 1.24 -1.30]. Similarly, for depression, two immigrant parents: 0.85 [95% CI 0.82-0.88], immigrant mother: 1.13 [95% CI 1.09 - 1.17], immigrant father: 1.31 (95% CI 1.28-1.37). Bipolar disorders, two immigrant parents: 0.67 [95% CI 0.60-0.76], immigrant mother: 1.19 [95% CI 1.07 - 1.31], immigrant father: 1.47 [95% CI 1.35-1.61]. The pattern was relatively consistent across parental regions of origin. Conclusions Those with one immigrant parent are more likely to use specialist mental health services, while those with two immigrant parents are not. These need special attention in adulthood. Key messages • Differences in risk of diagnosis for mental disorders could be due to differences in the utilization of mental health services. • Early prevention of mental health issues seems to be especially important among children and youth raised in families with one immigrant parent.