Key result
Suicidal ideation or attempts are linked to social stress-mediated autonomic imbalance and higher sympathetic activity.
Why the study?
To describe the relationship of autonomic nervous system activity with the social environment and suicidal spectrum behaviors.
Autonomic nervous system dysregulation, specifically SNS/PNS imbalance, may mediate the relationship between social stressors and suicidal behavior, serving as a potential biomarker.
Answers are grounded in this paper and cite their sources.
May indicate suicide risk via autonomic imbalance; hypothesis-generating and requires prospective validation before clinical use.
PURPOSE OF REVIEW: In this narrative review we wanted to describe the relationship of autonomic nervous system activity with social environment and suicidal spectrum behaviors. RECENT FINDINGS: Patients with suicidal ideation/suicide attempt have higher sympathetic nervous system (SNS) and lower parasympathetic nervous system (PNS) activity in resting conditions and during acute stress tasks compared with patients without suicidal ideation/suicide attempt. Death by suicide and violent suicide attempt also are related to SNS hyperactivation. Similarly, a SNS/PNS imbalance has been observed in people with childhood trauma, stressful life events or feelings of loneliness and isolation. Social support seems to increase PNS control and resilience. Due to the importance of the social context and stressful life events in suicidal behavior, SNS/PNS imbalance could act as a mediator in this relationship and be a source of relevant biomarkers. Childhood trauma and stressful life events may impair the autonomic nervous system response in suicidal patients. Loneliness, isolation and social support may act as moderators in acute stress situations.
No takes yet. Share an insight, caveat, or question.
Alacreu‐Crespo et al. (2024) conducted a review in Suicidal behavior. Patients with suicidal ideation or suicide attempt exhibit higher sympathetic nervous system and lower parasympathetic nervous system activity, reflecting an autonomic imbalance mediated by social stress.
Synapse has enriched 10 related papers. Consider them for comparative context: