![]() The team did not find any significant links between recent stresses and suicidal thoughts, or between lower surface area in the brain regions studied and suicidal thoughts – although recent studies have linked brain surface area, rumination and recent stress. The results suggest that increased rumination is a predictor of greater severity of suicidal ideation in young people with major depressive disorder. All the participants had a diagnosis of major depressive disorder. ![]() The findings, which are preliminary, include data from 67 male and female participants with an average age of 16. The links between cognitive rumination, and its underpinning brain structure have not previously been studied in relation to suicidal thoughts and behaviours in young people with major depressive disorders. In addition, recent stressful experiences during childhood are thought to shape brain development and have been linked to structural brain alterations thought to be associated with suicidal ideation. ![]() The aim was to test theories that suicidal ideation is linked to functional changes in specific regions of the brain, which are also linked to repetitive negative thinking, or cognitive rumination. They used data from an existing clinical trial (MR-IMPACT), set up to investigate major depressive disorders among adolescents. In the study, published this week ( Brain Awareness Week) in the Journal of Affective Disorders, the team looked at repetitive negative thinking – or cognitive rumination – structural changes in specific regions of the brain and recent stress. Researchers at the University of Birmingham in collaboration with researchers from the University of Cambridge, Leiden University, University of Melbourne and Yale Medical School examined three different risk factors thought to be linked to suicidal ideation (suicidal thoughts) among young people with major depressive disorder. Major depressive disorder carries on of the highest risks of suicide, and so better understanding the mechanisms which underlie this risk is critically important. Suicide is the second most common cause of death among young people, with around 800,000 deaths worldwide. A tendency towards repetitive, fixed thinking during low mood has been related to suicidal thoughts among adolescents with major depressive disorder in a new study.
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