Cumulative trauma predicts hair cortisol concentrations and symptoms of depression and anxiety in pregnant women-an investigation of community samples from Greece, Spain and Peru

Exposure to traumatic experiences across lifespan shapes the functioning of the hypothalamic pituitary adrenal (HPA) axis and sets individuals at risk to develop symptoms of depression and anxiety. Particularly, HPA axis regulation and the psychological health of the expectant mother have been of interest, as the health of the unborn child may be affected through changes in gestational biology. The present study investigated the potential associations between lifetime trauma, current symptoms (depression and anxiety) and hair cortisol concentrations (HCC) in pregnant women. A total of 149 pregnant women were interviewed in public outpatient clinics with varying gestational age in Greece, Spain and Peru. Lifetime trauma exposure and current symptoms of depression and anxiety were assessed. HCC was measured in scalp-near hair segments (2 cm length) reflecting cumulative cortisol secretion of the past two months. Results showed that trauma load is negatively associated with HCC and higher symptoms of depression and anxiety. There was a negative association between HCC and symptoms. The present findings support the notion that cumulative trauma exposure exerts long-lasting effects on the expectant mother's HPA axis activity functioning and mental health and may thereby potentially create risk trajectories for the unborn child via changes in gestational biology.

Automated summary

Exposure to traumatic experiences can increase the risk of depression and anxiety in pregnant women, and lower hair cortisol concentrations. This study found negative associations between trauma load, symptoms of depression and anxiety, and hair cortisol concentrations. These findings highlight the long-lasting effects of trauma on maternal HPA axis activity and mental health, potentially impacting the gestational biology of the unborn child.