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Mysterious gene may hide a trigger for suicide: study By Linda Nguyen

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Image uploaded from a quicklink Suicidal behaviour may be written in the genes, according to recently released peer-reviewed data from Canada's largest mental-health hospital.

The study, published online in the International Journal of Neuropsychopharmacology, looked at 12 academic studies conducted worldwide, linking suicidal behaviour and the brain-derived neurotrophic factor (BDNF) gene. Researchers at Toronto's Centre for Addiction and Mental Health found that the studies supported a theory that those who suffer from a psychiatric disorder and have a feature in their BDNF gene called a "methionine variant" have a higher risk of becoming suicidal than those who had a 'valiant variant' in this gene.

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