Still larger doses of nicotine may cause convulsions and death. The effects of nicotine upon the nervous system are varied among individuals. And so, smoking has negative health effects inside the human body. It leads to different kinds of respiratory diseases, such as lung cancer, chronic bronchitis and emphysema, and stroke. Smoking causes lots of people to die each year, but still not many people stop smoking because it is highly addictive.
Smoking does nothing good but is bad for health, and it is unwise to try it.