How Smoking Affects Your Health
There are no physical reasons to start smoking. The body doesn't need tobacco the way it needs food, water, sleep, and exercise. And many of the chemicals in cigarettes, like nicotine and cyanide, are actually poisons that can kill in high enough doses.
The body is smart. It goes on the defense when it's being poisoned. First-time smokers often feel pain or burning in the throat and lungs, and some people feel sick or even throw up the first few times they try tobacco.