Is there a biochemical predictor of suicide?

Area of Science:

• Biochemistry
• Psychiatry
• Neuroendocrinology

Background:

• Identifying patients at high risk of suicide is a critical clinical challenge.
• Existing assessment tools may not fully capture the self-destructive potential of all at-risk individuals.
• A potential biochemical marker could improve risk stratification.

Purpose of the Study:

• To investigate plasma cortisol levels as a potential biomarker for elevated suicide risk.
• To determine if differences in cortisol levels exist between individuals who die by suicide and those who do not.

Main Methods:

• Measurement of plasma cortisol levels in patients assessed for suicide risk.
• Follow-up assessment of patient outcomes, specifically suicide, within a two-year period.
• Comparison of cortisol levels between suicide completers and non-completers.

Main Results:

• Individuals who died by suicide within two years of testing had significantly higher plasma cortisol levels compared to suicidal patients who did not die by suicide.
• This suggests a potential correlation between elevated cortisol and completed suicide.

Conclusions:

• Elevated plasma cortisol may serve as a biological indicator of heightened self-destructive potential.
• Further research into the neurobiological underpinnings of suicide is warranted.
• Plasma cortisol measurement could potentially augment existing clinical assessments for suicide risk.