A blood test that can predict whether someone may attempt suicide has been developed by scientists in a breakthrough which could prevent hundreds of deaths.

据英国《每日电讯报》报道，研究人员取得科研突破，通过验血来预测人们是否具有自杀倾向，从而防止众多悲剧发生。

American researchers have found that variations in a single gene can be used to predict if someone is likely to take their own life.

美国研究人员发现，通过验血可以检查一种基因是否发生变异，从而预测某人是否企图自杀。

Researchers at John Hopkins University, in Baltimore, Maryland, found that the gene SKA2 stopped functioning correctly in people at risk of suicide. The SKA2 gene is found in the prefrontal cortex of the brain, and is involved in preventing negative thoughts and controlling impulsive behaviour.

美国约翰•霍普金斯大学研究人员发现，存在自杀风险的人的SKA2基因功能异常。SKA2基因位于大脑前额皮质，负责控制体内压力荷尔蒙皮质醇的含量，能够防止人们产生消极情绪并控制其冲动行为。

If there isn't enough SKA2, or it is altered in some way, the body cannot control levels of cortisol. Previous research has shown that people who attempt suicide or who take their own lives have large amounts of cortisol in their systems.

若体内SKA2基因含量不足，或以某种方式发生变化，人体将无法有效控制皮质醇含量。此前的研究发现，自杀或有自杀倾向的人体内皮质醇含量较高。

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