That person experiences persistent thoughts about death, most likely, the fault of a particular gene. Neuroscientists at the Centre for addiction and mental health Canada have found evidence that a specific gene in the human body triggers suicidal behavior.
Researchers have conducted research, analyzed data 3352 people, of whom 1202 in the past were suicidal attempts. It turned out that all implicated BDNF gene implicated in the development of the nervous system.
While 90 percent of suicide people had one or more mental disorders, change in BDNF gene carried a high risk of suicidal behaviour.
The discovery could lead to the development of a treatment aimed at relieving the gene causing suicide. Probably genetic testing in speed will help to identify prone to suicidal people.