# Environmental Stressors, Anemia, and Depressive Symptoms in Pregnancy: Unpacking the Combined Risks

## TL;DR

The study explores how environmental stressors and anemia during pregnancy are linked to depressive symptoms, especially in marginalized communities.

## Contribution

The paper introduces a novel analysis of how neighborhood-level environmental stressors and anemia interact to affect maternal mental health.

## Key findings

- Anemic individuals in high-crime neighborhoods had higher depressive symptoms.
- Poverty and racial disparities were strongly linked to mental health issues in pregnancy.
- Environmental stressors, not hemoglobin levels, were associated with depressive symptoms in anemic individuals.

## Abstract

Chronic exposure to structural violence and environmental hazards may disrupt stress regulation, trigger inflammation, and impair iron metabolism in women. Iron deficiency has been associated with depression, but the combined impact of environmental stressors and anemia on maternal mental health remains understudied. We analyzed associations between 28 neighborhood-level environmental stressors, hemoglobin levels, and depressive symptoms (measured by the Patient Health Questionnaire-9) during early pregnancy, using retrospective data from 1964 pregnant patients (2015–2019) at an urban health center in Chicago. Demographic and residential data were linked to environmental indicators from the Chicago Health Atlas. Factor analysis reduced the environmental variables, and multivariable regression models examined associations with PHQ-9 scores at first pregnancy encounter. Participants were predominantly non-Hispanic Black (56%) and Hispanic (27%), with 13% anemic and 16% screening positive for depressive symptoms. Poverty, non-Hispanic Black race, single status, public or no insurance, and unemployment were associated with higher depressive symptoms. Among anemic individuals, neighborhood crime was significantly associated with depressive symptoms, while hemoglobin levels and gestational age were not. These findings highlight how environmental and social inequities contribute to maternal mental health disparities and support the need for integrated, equity-focused prenatal care interventions.