Stress: Causes and Physiological Impact
With Sophie and Theo, Sociology & Mental Health Specialist
Key Takeaways
- The perinatal period is one of the most stressful life transitions many women experience.
- Stress here does not just affect the mother — it has documented effects on fetal development, birth outcomes, and child health years later.
- Life events like bereavement, relationship breakdown, or housing loss can be acute triggers.
- Chronic stressors include financial hardship, domestic abuse, and discrimination.
- The fight-or-flight response activates — adrenaline surges, heart rate and blood pressure rise, glucose is mobilised.
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Full Transcript
Sophie: Today's episode is about stress — its causes and physiological impact in the perinatal period. I'm Sophie, and with me is Theo, our Sociology and Mental Health Specialist. Theo, what makes stress in pregnancy particularly significant?
Theo: The perinatal period is one of the most stressful life transitions many women experience. Stress here does not just affect the mother — it has documented effects on fetal development, birth outcomes, and child health years later. That makes it a clinical concern.
Sophie: What are the main categories of stressor midwives might encounter?
Theo: Life events like bereavement, relationship breakdown, or housing loss can be acute triggers. Chronic stressors include financial hardship, domestic abuse, and discrimination. Work-related pressures are common too — particularly for women balancing pregnancy with demanding caring roles.
Sophie: What happens physiologically during acute stress?
How does stress: causes and physiological impact work in a healthcare context?
Theo: The fight-or-flight response activates — adrenaline surges, heart rate and blood pressure rise, glucose is mobilised. It is adaptive for short-term threats. The problem comes when this response is triggered chronically over weeks and months.
Sophie: What is the HPA axis and how does it come into play with chronic stress?
Theo: The hypothalamic-pituitary-adrenal axis is the longer-term stress response system. Persistent stress causes sustained cortisol elevation. Chronically high cortisol suppresses immunity, disrupts sleep, and in pregnancy may influence fetal brain development and birth weight.
Sophie: How might a midwife recognise significant chronic stress in a woman?
Theo: Clinical indicators include persistent elevated blood pressure without clear obstetric cause, poor sleep reported at every visit, emotional lability, or a woman who frequently mentions feeling overwhelmed. Asking directly — calmly and without judgement — is always appropriate.
What should learners understand about stress: causes and physiological impact?
Sophie: Is there a risk that pathologising stress adds to the burden rather than helping?
Theo: That tension is real. The midwife's role is to validate the woman's experience, not add to her worry. Asking about pressures with curiosity and warmth — not as risk-screening — makes the conversation therapeutic rather than surveillance.
Sophie: Science in the service of compassion — thank you, Theo.
Theo: Telling a woman that reducing her stress has measurable biological benefits for her baby is often more motivating than abstract wellbeing advice. That is the power of understanding the physiology.