Nicotine is a psychotropic drug and the main addictive ingredient of tobacco products. In smaller doses, it acts as a stimulant while in much higher quantities it can be fatal. But that’s hardly how nicotine kills. In fact, in cigarettes it’s not the most hazardous chemical but it’s the one that makes it addictive and makes you consume the 4000 other chemicals of which 40 are known carcinogens and 400 more are toxic to a certain degree. Most smoking cessation techniques are based on looking to replace nicotine without adding the other harmful ingredients of tobacco like tar, benzene, formaldehyde, arsenic and cadmium. Tobacco is extremely addictive and it kills more people than all other recreational drugs put together. The habit is linked to a variety of diseases, including cancer. In fact one out of three cancer cases is caused due to tobacco use. It is the biggest avoidable cause of death in the world and along with alcohol, junk food and a sedentary lifestyle, the main cause for the rise in lifestyle diseases like diabetes, hypertension and cardiovascular ailments.