Stress, cortisol and suicide risk

Area of Science:

• Neuroscience
• Psychiatry
• Global Health

Background:

• Suicide is a major global health crisis with over 800,000 annual deaths.
• Existing models explain suicide risk through psychological, social, psychiatric, and neurobiological factors.
• The stress-diathesis model posits that suicidal behavior arises from stress interacting with inherent susceptibility.

Purpose of the Study:

• To provide an overview of studies on stress and suicide risk.
• To highlight the role of dysregulated hypothalamic-pituitary-adrenal (HPA) axis activity in suicide.
• To examine additional stress-related risk factors for suicide.

Main Methods:

• Review of studies investigating stress and suicide.
• Analysis of cortisol levels as a measure of HPA axis activity.
• Consideration of evidence for childhood trauma, executive function, impulsivity, sleep, family history, perinatal, and epigenetic factors.

Main Results:

• Stress and dysregulated HPA axis activity (cortisol levels) are significant suicide risk factors.
• Childhood trauma, impaired executive function, impulsivity, and disrupted sleep are associated with increased suicide risk.
• Family history of suicide, perinatal, and epigenetic factors also influence suicide risk.

Conclusions:

• Stress, particularly HPA axis dysregulation, is a critical component of suicide risk.
• A comprehensive understanding of suicide requires considering a range of biological, psychological, and social factors.
• Further research into these interconnected factors can inform prevention and intervention strategies.