TIMING of parental depression is linked to distinct mental health risks in adult offspring, with in utero exposure to maternal depression associated with later psychotic experiences in early adulthood, according to a large UK cohort study.
Analysing more than two decades of data from the Avon Longitudinal Study of Parents and Children, researchers found that when depression occurs in parents matters as much as whether it occurs at all. Maternal symptoms during pregnancy were uniquely associated with offspring psychotic symptoms, while both maternal and paternal depression across childhood were linked to offspring depression and anxiety in early adulthood.
Why Timing of Parental Depression Matters
Exposure to parental depression is a recognised risk factor for mental illness in offspring. Depression, characterised by persistent low mood and reduced functioning, can influence parenting, family environment, and fetal development when occurring during pregnancy.
Long-Term Data Reveals Distinct Patterns
The study followed 5,329 individuals aged 22 to 27 years. Parental depressive symptoms were repeatedly measured using the Edinburgh Postnatal Depression Scale from pregnancy until offspring were 21 years old.
Cumulative exposure to both maternal and paternal depression was associated with increased odds of offspring depression and anxiety in early adulthood. Maternal exposure showed stronger associations, particularly for anxiety. Notably, only maternal depression around 32 weeks’ gestation was linked to offspring psychotic symptoms.
Paternal depression showed no significant associations during the prenatal period. Instead, its impact emerged from around age five onwards, where it was linked to adult offspring depression and anxiety in early adulthood.
No statistically significant associations were observed for alcohol use disorder.
Interpreting Potential Mechanisms
The findings point to potentially distinct biological and environmental pathways. The in utero connection may partly explain why only maternal depression was associated with psychotic outcomes. In contrast, paternal influences may operate more strongly through postnatal environmental pathways.
Chronic exposure also appeared important, with sustained parental depressive symptoms linked to increased cumulative risk of depression, anxiety, and psychotic symptoms in adulthood.
Limitations and Clinical Implications
As an observational study, causality cannot be established. The cohort was predominantly white (~98%), and selective attrition of male participants and those exposed to higher parental depressive symptoms may have influenced findings. Furthermore, the study did not account for caregiving roles or the extent of parental involvement, which may influence how exposure to parental depression relates to offspring outcomes.
The results reinforce the importance of supporting parental mental health from pregnancy onwards. Pregnancy may represent a particularly sensitive window for intervention, while continued support through childhood could mitigate longer-term psychiatric risk in offspring.
Reference
Feibel A et al. Timing of exposure to parental depression from pregnancy to young adulthood and mental health in adult offspring. JAMA Netw Open. 2026;DOI: 10.1001/jamanetworkopen.2026.4892.
Featured image: WavebreakMediaMicro on Adobe stock
