这个消息可能对那些极其注重保健养生的人是个打击,但是科学家发现,即使生活方式健康,依然有三分之二的癌症是难以避免的,因为大部分癌症都是DNA复制时突然产生的错误所致。
Two thirds of cancers are unavoidable even if you live a healthy life, a study has shown.
研究表明,即使生活方式健康,依然有三分之二的癌症是难以避免的。
Scientists in the US found cancers are caused by random mistakes in the genetic code that occur when cells divide.
美国科学家发现,细胞分裂时产生的基因序列随机错误能致癌。
The findings challenge the widespread view that cancer mutations are generally inherited or triggered by environmental factors.
这一发现之前,人们普遍认为,细胞癌变通常是遗传或者环境因素所致。
Instead, the vast majority of cancers are probably down to unlucky defects in replicating DNA that occur out of the blue, they suggest.
然而,研究人员指出,大部分癌症的发生可能都是DNA复制时突然产生的错误所致。
Lead scientist Dr Cristian Tomasetti, from Johns Hopkins Kimmel Cancer Center in the US, said: "It is well-known that we must avoid environmental factors such as smoking to decrease our risk of getting cancer.
美国约翰霍普金斯大学金墨尔癌症中心首席科学家克里斯蒂安•托马塞蒂博士指出:“众所周知,我们必须避开吸烟等环境因素从而减少罹癌的可能。”
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