An addiction to nicotine is a serious one indeed. Many studies have shown that it is one of the most addictive substances known, and most people will gain a dependency to it soon after they start smoking regularly. When you smoke a cigarette, you body receives an instant rush of nicotine – there is a spike in your nicotine levels which slowly dissipates, and when your nicotine levels drop below a certain point you will crave another spike, in the form of another cigarette.
Are There Safe Cigarettes? 
Tobacco wasinitially used by pre-Columbian Native Americans, who smoked it in pipes andeven used it for hallucinogenic purposes in shamanic rituals. ChristopherColumbus was given tobacco by natives and introduced it Europe when he returnedfrom North America. However, tobacco did not become widely used inEurope until the middle of the 16th century, when explorers and diplomats suchas France’s Jean Nicot (for whom nicotine was named) popularized its use.
