Summary: Cortisol and other neuroendocrine markers change in people facing bereavement, with potential implications for physical and mental health.
Source: Wiley
Researchers reviewed existing evidence on the neuroendocrine effects of grief and considered whether biological markers can help predict complicated or prolonged grief following the death of a loved one. The results are published in the Journal of Neuroendocrinology.
This systematic review screened the literature and identified 20 relevant studies that addressed neuroendocrine correlates of bereavement. The majority of studies focused on cortisol, the primary stress hormone, and most reported altered cortisol patterns in bereaved individuals—often elevated cortisol levels in blood, urine, or saliva, flattened diurnal cortisol slopes, or higher cortisol on waking. While many studies had only fair methodological strength, a consistent signal emerged linking bereavement to cortisol dysregulation, which may contribute to increased vulnerability for physical and psychological problems following loss.
According to senior author Beate Ditzen, PhD, of Heidelberg University Hospital, “Anticipatory grief and grief after social loss are fundamental stressors and can have long-term health implications for those who lose a loved one. Identifying neuroendocrine factors that are associated with grief might help tailor interventions for the bereaved and help them cope with loss.”
The review highlights that cortisol changes were not uniform across all bereaved people. Individual differences moderated these neuroendocrine responses: emotional intensity of grief, co-occurring depressive symptoms, the severity and closeness of the relationship to the deceased, and demographic factors such as age and sex all influenced cortisol measures. These moderators suggest that biological responses to loss are complex and interact with psychological and social factors.
Most existing studies concentrated on cortisol, and only a few examined other biomarkers such as oxytocin. The authors emphasize the need for more comprehensive research that includes a wider range of neuroendocrine markers, consistent timing of biological sampling, and longitudinal designs that follow bereaved people over time. Such research would clarify short-term versus persistent biological changes and could identify those at risk for prolonged grief disorder or other adverse health outcomes.
Better understanding of neuroendocrine mechanisms could inform clinical practice: identifying biological correlates of severe or prolonged grief might enable targeted psychosocial or medical interventions, particularly in settings like palliative care where anticipatory grief is common. Tailored support could aim to reduce prolonged stress responses and mitigate downstream effects on immune function, cardiovascular risk, and mental health.
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Original Research: Open access
“Neuroendocrine mechanisms of grief and bereavement: A systematic review and implications for future interventions” by Dora Hopf, Monika Eckstein, Corina Aguilar‐Raab, Marco Warth, Beate Ditzen. Journal of Neuroendocrinology. DOI: 10.1111/jne.12887
Abstract
Neuroendocrine mechanisms of grief and bereavement: A systematic review and implications for future interventions
Bereavement is linked to adverse behavioral, psychological, and physiological outcomes and is associated with increased risk of morbidity and mortality. However, focused reviews of neuroendocrine mechanisms underpinning grief and bereavement have been limited. This systematic review synthesizes available evidence to evaluate neurobiological findings and their implications for developing new interventions. Using PRISMA guidelines, the authors searched for studies that evaluated neuroendocrine correlates of grief and summarized findings qualitatively. Study quality was appraised using the National Heart, Lung, and Blood Institute Study Assessment Tool. From 460 records screened, 20 studies met inclusion criteria; most were judged to be of fair quality.
Cortisol was the most frequently measured neuroendocrine marker. The bulk of studies reported elevated mean cortisol levels in bereaved participants, evidence of flattened diurnal cortisol rhythms, and higher morning cortisol in the weeks or months following loss. Cortisol alterations were moderated by factors such as individual emotional reactions, depressive symptoms, the intensity and duration of grief, closeness to the deceased, and demographic characteristics including age and sex. Research in this area remains in an early stage: studies vary in grief assessment methods, biomarker selection, timing of biological sampling, and follow-up duration. Limited data exist for other biomarkers like oxytocin.
The review concludes that future work should broaden the range of neuroendocrine markers studied, apply longitudinal approaches to chart psychobiological trajectories after loss, and investigate how biological patterns relate to clinical outcomes. Improved evidence could guide the creation of individualized psychosocial interventions—potentially within palliative care or bereavement services—to reduce the risk of prolonged grief disorder and its health consequences.