一项针对130万女性的最新研究发现,女性在40岁时戒烟可明显降低死亡率,能多活十年;30岁戒烟则可以将早亡的额外风险降低97%。研究结果显示,终身吸烟者的寿命比不吸烟者少十年,且多死于肺癌、慢性肺病、心脏病等由吸烟导致的疾病。吸烟者的死亡风险随着吸入烟草的数量不断增加,就算每天吸烟少于十枝的烟民,其死亡风险仍是不吸烟者的两倍。研究人员指出,虽然40岁以前一直吸烟对身体危害很大,但40岁之后继续吸烟的危害却是之前阶段的十倍。
Women who stop smoking by the age of 40 dramatically cut risk of early death, enjoying up to ten more years of life, a major new study has found.
The study of 1.3 million women found that quitting smoking by the age of 30 allowed women to avoid up to 97 percent of the extra risk of premature death.
The results, which are published in The Lancet medical journal, showed that lifelong smokers died a decade earlier than those who did not smoke at all.
Those who stopped at thirty lost an average of a month of life and if they stopped at 40 they died a year younger.
Most of the increased death rate resulted from smoking-related diseases such as lung cancer, chronic lung disease, heart disease or stroke.
The risk rose steeply with the quantity of tobacco smoked, but even light smokers who puffed fewer than 10 cigarettes a day doubled their likelihood of dying.
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