How Displacement Duration Shapes Sleep and Mental Health in IDPs

A new study in Scientific Reports examines the link between sleep disturbances, stress, and psychological distress in internally displaced persons (IDPs). The research highlights how the length of displacement affects mental health and sleep patterns. It also explores biological markers like cortisol levels as key indicators of long-term risk. The study found that sleep problems are common among IDPs. Recently displaced individuals often experience acute sleep disturbances, while those displaced for longer periods show chronic sleep abnormalities. Over time, sleep fragmentation and reduced deep sleep worsen anxiety, depression, and cognitive difficulties.

Biological changes also play a role. Short-term displacement often leads to high cortisol levels, while prolonged displacement flattens the natural daily rhythm of cortisol. These changes in the HPA axis help explain the increased stress and psychological strain observed.

Social support and healthcare access appear to ease these effects. IDPs with stronger support networks and better medical resources maintain more stable sleep and report lower psychological distress, regardless of how long they have been displaced.

The research suggests tailored mental health responses. For recent arrivals, immediate interventions such as stress reduction, sleep support, and trauma counselling are advised. For those displaced long-term, chronic disease management approaches may be more suitable. Biomarker-based diagnostics, including cortisol and sleep metrics, could help identify high-risk individuals and guide personalised care. The findings underline sleep health as a critical factor in psychological resilience for displaced populations. Humanitarian and government agencies are urged to allocate resources based on displacement duration. This approach aims to provide effective, time-sensitive mental health support to those most in need.