与吸二手烟或没接触烟草的人相比，几乎全部的主动抽烟者的婴儿的胎粪代谢物的浓度比较高。

Concentrations were higher and almost universally detected among infants born to active smokers compared to women with secondhand or no exposure.

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研究结果发现吸烟者多在青少年时期初次接触烟品，之后因为同侪鼓励、生活压力或职业需求等原因持续抽烟，进而形成习惯。

The research indicated that smokers usually started smoking during their teenage years and then developed a habit due to peer pressure, or stress from their job or life.

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报告显示，案例中男性患者中70%是由抽烟诱发癌症的，而直邮18%的女性患者是因为抽烟或被迫吸入二手烟才诱发癌症的。

Smoking causes 70 percent of cases among men while only 18 percent of female patients developed cancer from smoking or inhaling second-hand smoke, according to the report.

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报告显示，案例中男性患者中70%是由抽烟诱发癌症的，而直邮18%的女性患者是因为抽烟或被迫吸入二手烟才诱发癌症的。

Smoking causes 70 percent of cases among men while only 18 percent of female patients developed cancer from smoking or inhaling second-hand smoke, according to the report.

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