Chain smokers harm not only the lungs, but also the brain
Nicotine may harden the arteries and may be responsible for much of the heart disease caused by tobacco. New research has found that it may also cause a lot of the cancer in tobacco smokers and people who live or work where tobacco is smoked. This is because it breaks down into a cancer causing chemical called `N Nitrosamine’ when it is burned
(and maybe even while it is inside the body as well).