Prenatal Stress
The Frasch Lab investigates chronic stress during pregnancy and its effects on fetal and neonatal neurodevelopment. Our research emphasizes early detection and intervention strategies to mitigate long-term developmental consequences.
Overview
Early identification of fetuses exposed to prenatal stress enables therapeutic intervention before significant damage occurs. The effects of prenatal stress range from increased autism spectrum disorder risk to Parkinson’s and Alzheimer’s susceptibility. The metabolic costs of chronic stress represent an underexplored research avenue.
A key finding: stressed fetuses entrain their heartbeat to the maternal heartbeat, but non-stressed fetuses do not. This multinational research team examines stress system impacts across genomic, molecular, biophysical, and behavioral levels.
Research Focus Areas
- Psychosocial stress mechanisms: Associations between pregnancy stress and preterm birth outcomes
- Biomarker development: Non-invasive detection methods reflecting fetal brain epigenetic changes
- Neuroimmunometabolic hypothesis: Framework connecting developmental origins to autism spectrum disorder
- Microglial responses: How early stress creates lasting changes affecting adult neurodegeneration risk
- Maternal-fetal signaling: The fetus as a “radar” detecting maternal physiological stress states
- Intervention strategies: Early identification programs for at-risk infants
Selected Publications
From the Frasch Lab
- Measuring the time-scale-dependent information flow between maternal and fetal heartbeats during the third trimester: impact of fetal sex and maternal chronic stress — Biology, 2026
- Heart rate variability patterns reflect yoga intervention in chronically stressed pregnant women: a quasi-randomized controlled trial — Bioengineering, 2025
- Maternal prenatal stress induces sex-dependent changes in tRNA fragment families and cholinergic pathways in newborns — Molecular Psychiatry, 2025
- Perinatal psychoneuroimmunology of prenatal stress and its effects on fetal and postnatal brain development — Methods in Molecular Biology, 2025
- Autism spectrum disorder: a neuro-immunometabolic hypothesis of the developmental origins — Biology, 2023
- Maternal-fetal stress and DNA methylation signatures in neonatal saliva: an epigenome-wide association study — Clinical Epigenetics, 2022
- Early biomarkers and intervention programs for the infant exposed to prenatal stress — Current Neuropharmacology, 2022
- Prenatal stress perturbs fetal iron homeostasis in a sex specific manner — Scientific Reports, 2022
- Detection of maternal and fetal stress from the ECG with self-supervised representation learning — Scientific Reports, 2021
- ECG-based stress detection using machine learning — arXiv preprint, 2020
- Vitamin D and cortisol interactions in prenatal stress — arXiv preprint, 2019
- Maternal stress biomarkers via fetal-maternal ECG — arXiv preprint, 2019
- Microglial memory of prenatal inflammatory stress — arXiv preprint, 2019
- Placental calcification and prenatal stress markers — Wallingford et al., Frontiers in Physiology, 2018
- Neurobiology of prenatal stress effects — arXiv preprint, 2018
- Perinatal stress and fetal programming — Shapiro, Fraser, Frasch, Séguin, J Perinat Med, 2013
Supporting Research from the Field
- Family Ruptures, Stress, and the Mental Health of the Next Generation — Persson & Rossin-Slater, American Economic Review, 2018 (economic impact of prenatal stress on long-term outcomes)
- Psychosocial stress during pregnancy: associations with preterm birth and neurodevelopment — Progress in Neurobiology
Methods
- Heart rate variability analysis
- Electrocardiogram monitoring
- Placental vascular assessment
- Multi-scale, multi-species comparative approaches
- Machine learning for stress detection from biosignals