As part of the cigarette contains a terrible poison - polonium 210. The tobacco companies know this, but for 40 years hiding the truth from the consumers of their products.
The fact that the leadership of the cigarette manufacturers were aware of the problem, say internal documents from tobacco companies. Order a half thousand of them contain a reference to the content of polonium in cigarettes.
Specialists companies have tried to remove the poison from cigarettes, but these attempts were unsuccessful. Over four decades, and concealed this information from the smokers.
Polonium is a deadly poison and causes lung cancer. It is to them two years ago in London was poisoned former KGB agent Alexander Litvinenko.