Effects of smoking on the body system 6.2

Nicotine in cigarettes is addictive and therefore is harmful and because of the nicotine addiction they continue to smoke, cigarettes contain well over 1000 different chemicals which can interfere with the body and put it under constant pressure.
Tar is also found in cigarettes, it is sticky and brown causes the discolouring of teeth, fingers and the lining of the lungs, the tar contains carcinogen benzoapyrene and this is linked with tumours in the lungs.
Carbon monoxide is also found in cigarettes, this is odourless and a type of gas, this gas can be fatal in large quantities as it takes oxygen from the blood, carbon monoxide binds with the haemoglobin better than oxygen and means less oxygen is reaching the heart, brain, muscles or other organs that require it, this then allows damage to occur.
Hydrogen cyanide is also found in cigarettes this affects the cilia hairs, these help clean the airways and remove unwanted substances and foreign bodies, hydrogen cyanide stops the lungs from doing this and allows the poisonous gas to build up in the lungs, there is a link to this also affecting the heart, which in turn can lead to heart disease and stroke.
Cigarettes also contain arsenic and lead these can affect passive smokers, they cause damage to the trachea and larynx it also damages the air sacs in the lungs and the lungs take years to recover.