EVERY BREATH OF TOBACCO SMOKE TAKEN DEPOSITS TAR IN THE LUNGS. THE TAR IN CIGARETTE SMOKE CONTAINS CHEMICALS CALLED CARCINOGENS, WHICH ENCOURAGES THE DEVELOPMENT OF CANCER CELLS IN THE BODY.
IT IS COMMON KNOWLEDGE THAT NICOTINE IS WHAT CAUSES SMOKING TO BECOME ADDICTIVE. NICOTINE IS THE STIMULANT THAT SMOKERS CRAVE. HOWEVER RECENT STUDIES HAVE FOUND THAT NICOTINE IN NORMAL DOSES IS NOT HARMFUL. IT IS TOBACCO ON THE OTHER HAND, WHICH IS RESPONSIBLE FOR MAJORITY OF THE ILLNESSES AND DEATHS RELATED TO SMOKING. THE MAIN HARMFUL SUBSTANCES AND THEIR EFFECTS ARE LISTED ARE LISTED ON THE RIGHT.
