美国健康专家说,疾病预防控制中心最近的一项调查表明,禁止在公共场所吸烟的法律大幅减少了心脏病的发病率。对美国西部科罗拉多州普韦布洛市一项禁烟活动进行研究的人员称,在这个城市实行的禁烟法已经使得因为心脏病发作而住院的人减少了百分之四十。美国疾病预防控制中心专攻吸烟与健康的特里·佩哈切克医生说,这项研究显示,二手烟可能是造成心脏病 A U.S. health expert said a recent CDC survey showed that the law banning smoking in public places drastically reduced the incidence of heart disease. A study of a smoking ban in Pueblo, Colorado, in the western United States, said smoking bans in the city have reduced the number of people hospitalized for heart attacks by 40%. Dr Terry Pechacek, who specializes in smoking and health at the Centers for Disease Control and Prevention in the United States, said the study shows that secondhand smoke may be the cause of heart disease