Tobacco smoke inhaled by nonsmokers not only carries the threat of lung cancer but also increases the incidence of high blood pressure, heart disease, apoplexy, and stomach ailments, statistics reveal.
流行病學的統計上顯示，不抽菸者吸入別人吐出的菸後，不但有得肺癌的威脅，而且高血壓、心臟病、中風、胃病的罹患率都會提高。