Nicotine is an alkaloid poison found in tobacco. Alkaloid is an organic compound made out of hydrogen, carbon and nitrogen. All these chemicals have potent effects on the human body. Generally, nicotine is used in medicine and as an insecticide. A single cigarette yields about 1 mg of absorbed nicotine. The substance acts as a stimulant, which is the main cause responsible for the dependence-forming properties of cigarettes smoking. Various researches have proved that nicotine in cigarettes that causes addiction is one of the hardest addictions to break.
There are various ways how Nicotine in cigarette causes addiction. Some of them are –