The short - lived slowdown may help explain how , over time , exposure to cigarette smoke can raise nonsmokers ' heart disease risk , according to investigators 这项研究提出并可以帮助解释吸烟如何增加不吸烟者患心脏病的危险。
Risk of lung cancer can be halved after quitting smoking for 5 years . after 10 years of quitting , the risk returns to that of a non - smoker 戒烟五年者可减低一半患肺癌的机会，戒烟十年以上者患癌机会减低至与不吸烟者一样。
Passive smoking has been under attack in recent years as more nonsmokers are becoming aware of the dangers of breathing second - hand tobacco smoke 更多的不吸烟者开始意识到吸进他人吐出烟雾的危险，近年来人们一直在声讨被动吸烟。
" whereas if you stop smoking , it takes about 20 years before your risk of lung cancer drops down to that of the non - smoking population . 但是，如果你现在开始戒烟，需要20年的时间你患肺癌的风险才能下降到正常人（不吸烟者）的水平。
Non - smokers also face lung cancer dangers from the inhalation of tobacco smoke in bars , restaurants and other public places , researchers agree 研究者认为，不吸烟者由于吸入酒吧，餐厅和其它公共场所里的烟草烟雾，同样也面临着肺癌的威胁。
Second - hand smoke , sometimes referred to as [ positive - passive ] smoke , is defined as cigarette , cigar or pipe smoke that is [ in held - inhaled ] unintentionally by nonsmokers 二手烟，有时被称为被动吸烟，其定义是不吸烟者无意识地吸入的香烟、雪茄或大烟等的烟雾。
However , the researchers said , the observed association in never - smokers , suggests that the observed relationship between periodontal disease and tongue cancer is independent of smoking 然而，研究者说，通过对不吸烟者的观察，结果表明牙周疾病与舌癌二者之间与吸烟无相关性。
If non - smokers really felt strongly about second - hand smoke , these smoke - free pubs would attract flocks of high - paying non - smokers and staff would queue to work there even at lower wages 如果不吸烟者对二手烟反应强烈，那么，这些无烟酒吧将会吸引众多高收入的不吸烟者；即便工资更低，员工也会排队申请来这里工作。
