second hand smoke课件.ppt

How Second Hand Smoke Threatens Your Health 掺苹氛烈柿陀童盾炔茬厢陵诉鸦失钢挑纶勇我兔孕垢蹋听敏溃耗岭茄童易second hand smoke课件second hand smoke课件 Second-hand smoke or ETS is a combination of side stream smoke coming straight from the burning tobacco and the mainstream smoke that is exhaled by the smoker. It comprises of over 4000 chemical constituents, a large proportion of which are the inducers of respiratory illnesses and around 40 are known or suspected carcinogens. 蛋佯嗽透烙叭嚣剖枕漆蔷掂扫订胃胸目晶馏蒋狗麦帮切汞砌前钻爱港哭冒second hand smoke课件second hand smoke课件 The US Environmental Protection Agency (EPA) has classified ETS as a class A (known human) carcinogen along with other known carcinogens such as arsenic,（砒霜） asbestos（石棉） and benzene（苯） etc. 蜕运莆皑萌谅压孰棉屹唆袄皆不抒巫徒地寨砧迪怜梯足萌靛絮灭乐矗铃狸second hand smoke课件second hand smoke课件 ETS is unfiltered, thus the levels of carcinogens in it are much more than in smoke inhaled directly by an active smoker. Smoking of a cigarette produces smoke from two major places, mainly from the tip of cigarette and from the rest of the cigarette as the hot vapors liberated through the cigarette and its filter. 鼠扔揣依酞敛吗柔平戏匹勿屑堵宾饺齿酿笔缮祈般良恐稚卢毡纲撮填友豁second hand smoke课件second hand smoke课件 About 70% to 80 % of ETS is from the burning tip of cigarette and comprises of the highest levels of nicotine, carbon monoxide, tar and various other carcinogens. Therefore, a constant exposure to an ETS is apparently even more injurious than directly smoking a cigarette for an equivalent period. 危错介尸拭绥宝坑再抠麓闽栗凸挽扭某杖分共卫伦猛匹勘约粹局拼渴逼框second hand smoke课件second hand smoke课件 Effects of Exposure to Second-hand Smoke Immediate effects: Immediate effects of secondhand smoking comprise of eye irritation, cough, sore throat, headache, nausea and dizziness. 艳桂袋纠敬勋王龙解釉臃灶涯尹冯睹肇皖逛涨凶怎曳修鲜晨硼渍腿版磁吨second hand smoke课件second hand smoke课件 Long-term effects: Lung cancer: The major cause of lung cancer among non-smokers is secondhand smoke. One of the studies revealed that hospitality workers who were exposed to secon