吸烟可以被认为是一个人可能拥有的最危险的习惯之一。每年平均有45万人死于吸烟。这不仅仅是车祸、酒后驾驶和非法药物。那么，为什么人们还在继续吸烟呢?知道了致命的影响，是什么让人们想要吸烟呢?没有一个真正的原因导致人们吸烟。事实上，科学家们认为有几个原因是吸烟的原因。有些人开始吸烟是因为他们看到自己喜欢吸烟的人，觉得这很酷。和朋友一起尝试是一些人吸烟的另一个原因。在20世纪30年代和40年代，人们被告知吸烟对你有好处，香烟不会伤害你。 After many generations of smoking because of that false allegation leads to more and more people smoking. If a person grows up in an environment where those all around them smoke, they are more likely to smoke as well. There are many reasons that may cause an individual to smoke but only the smoker can explain why he or she started to smoke. What exactly are the effects of smoking besides addiction and ultimately death? Smoking causes more diseases that have ever been investigated in biomedical research. Smoking can cause lung cancer, heart disease, strokes, emphysema, heart murmurs, insomnia, asthma, and a wide variety of other diseases. Lung cancer alone causes 27% of the deaths in smokers. Lung cancer may not appear immediately after an individual starts smoking. It may take years for lung cancer, or any other cancer to appear in one’s body after smoking, People with lung cancer may be eligible to try chemotherapy and other treatments to stop the cancer from growing; however, lung cancer is still the number one killer in smokers. Heart disease causes about 24% of the deaths from smoking and emphysema causes about 23% of deaths in smokers. There are...