Testosterone levels in suicide attempters with bipolar disorder

Area of Science:

• Neurobiology
• Endocrinology

Background:

• Testosterone is primarily known for its effects on sexual function and aggression.
• Androgens, including testosterone, may play a role in the pathophysiology of mood disorders and suicidal behavior.

Purpose of the Study:

• To investigate the relationship between testosterone levels and clinical parameters in individuals with bipolar disorder who have attempted suicide.
• This is the first study to explore this specific association.

Main Methods:

• Patients diagnosed with bipolar disorder (16 males, 51 females) experiencing depressive or mixed episodes with a history of suicide attempts were recruited.
• Demographic and clinical data, including lifetime suicidal behavior, were collected.
• Plasma testosterone levels were measured using radioimmunoassay.

Main Results:

• Men exhibited higher testosterone levels, more major depressive episodes, and greater lethality of suicide attempts compared to women.
• Women reported higher current suicidal ideation scores.
• After controlling for sex, testosterone levels showed a positive correlation with the number of manic episodes and the number of suicide attempts.

Conclusions:

• The findings align with prior research associating testosterone levels with mood and behavioral parameters.
• Testosterone levels may be implicated in the progression of bipolar disorder and suicidal behavior.
• Further research is warranted to elucidate the role of testosterone in the neurobiology of mood disorders and suicidal behavior.