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自杀既可以由生理因素(如躯体残疾、癌症)引起,也可以是心理方面的障碍或不适应社会环境所致,较常见的诱发因素有恋爱挫折、人际关系受阻、失业等等。最近,加拿大渥太华从事自杀研究的专家们经过10年观察发现,脑内的一种感受基因一旦发生变异,就会削弱人对自杀的拒绝能力,容易导致一时冲动而自杀。这是首次把自杀当作一种疾病进行的病理分析。
Suicide can be caused by physiological factors (such as physical disability and cancer), mental disorders or social environment. The most common inducing factors are love and frustration, interpersonal obstruction, unemployment and so on. Recently, experts engaged in suicide research in Ottawa, Canada, after 10 years of observation, found that once a sensory gene in the brain has changed, the ability of people to refuse suicide will be weakened, leading to impulse to commit suicide. This is the first time that suicide has been diagnosed as a disease.