大量的科學研究資料早就證明，吸煙對人體健康的危害十分廣泛。所有煙草中均含有可導致人體發生多種致死性和致殘性健康問題的毒素；吸煙者患癌癥，尤其是肺癌、心臟病、肺氣腫及其他致死性疾病的危險性會明顯增加，全世界每年因吸煙死亡達250萬人之多，煙是人類第一殺手。自覺養成不吸煙的個人衛生習慣，不僅有益于健康，而且也是一種高尚公共衛生道德的體現。以下就是關于吸煙有害健康的英語演講，我們一定要重視吸煙有害健康這個問題，從自身做起，保護自己也保護環境。

　　1. Smoking And Health

　　Today smoking is a widespread habit all over the world. Not only the old, the youth, but also middle school students have been engaged in smoking. Many of them think that smoking is a smart symbol.

　　However, smoking is harmful to one’s ,health. It contributes a lot of lung cancer, from which many people have died in the past years. It can also cause many other diseases. In a word, if you smoke, you do have a much greater chance of losing your health. Furthermore, scientific research shows that smoking is not only harmful to smokers themselves, but also a threat to public health, especially to women and children. Therefore, many countries have made laws forbidding smokers to smoke m public places such as cinemas, stations, hospitals, and so on Give up smoking! If you don’t smoke, don’t start. Give up smoking for the sake of your health, for the sake of your family, and for the sake of the whole world.

　　2. Do you have a habit of smoking?

　　Anyone here?And that’s our topic today-smoking is bad for your health. The data based on the Centers for Disease Control and Prevention, cigarette contains more than 4,000 chemicals, as well as more than 250 kinds of toxic or carcinogenic. I will be in three parts of the contents, first to talk about the dangers of smoking, followed by talking about why so many people smoke, and finally some advice to quit.

　　Smoking is bad for your health---no kidding we will agree with that. According to the World Health Organization, 1/4 of the lung cancer patients in industrially developed countries, 90% are smokers; those who were died of bronchitis, smokers accounted for 75%; and in myocardial infarction smokers accounted for 25%.

　　Now smoking does so much harm on their own or others, why do so many people still smoke a lot? First, it is a long-established habit for many people, they could not escape in a short time.Second, a necessary for social intercourse. Third, a lot of smokers have less sense of the seriousness of the consequences of smoking.

　　There are various methods to quit smoking, and it varies from person to person. First, please have confidence and determination.Secondly, make out plans to reduce the number of daily smoking. How about the cravings coming back? You can take activities to distract, like a deep breath, drinking tea, eating snacks and so on.

　　To sum up, what we talk above are about the dangers of smoking, the reason some people smoke, and finally some suggestions about cessation. That’s all, thank you.