Early life adversity potentiates the effects of later life stress on cumulative physiological dysregulation

Research output: Contribution to journalJournal articleResearchpeer-review

Nadya Dich, Åse Marie Hansen, Kirsten Avlund, Rikke Lund, Erik Lykke Mortensen, Helle Bruunsgaard, Naja Hulvej Rod

Background and Objectives: Previous research indicates that early life adversity may heighten stress reactivity and impair mechanisms for adaptive coping, suggesting that experience of stress in early life may also potentiate adults' physiological vulnerability to stress in later life. The study tested this hypothesis by investigating whether experience of stressful events and circumstances (SEC) in childhood or adolescence amplified the effect of adulthood SEC on physiological dysregulation (allostatic load, AL) in later midlife. Design: Observational data were used in the present study. Physiological functioning was measured in later midlife (participants' age ranged from 49 to 63). Both childhood/adolescence and adulthood SEC were reported retrospectively on the same occasion. Methods: Participants were 5,309 Danish men and women from Copenhagen Ageing and Midlife Biobank. SEC included socio-economic and family factors. The AL index was based on 9 cardiovascular, metabolic and immune biomarkers. Results. Experience of SEC in both early life and adulthood independently predicted higher AL. In men, experience of SEC in early life also potentiated the effect of SEC in adulthood on AL. Conclusions: The results provide further insight into the mechanisms behind the "biological embedding" of childhood stress.

Original languageEnglish
JournalAnxiety, Stress and Coping
Volume28
Issue number4
Pages (from-to)372-390
Number of pages19
ISSN1061-5806
DOIs
Publication statusPublished - 2015

ID: 124892918