Smoking still remains one of the leading causes of preventable death. Smoking has the dubious distinction of affecting all the systems from head to foot.

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Cigarette Smoking Risk Calculator is a powerful and interesting calculator that predicts the loss in one's lifespan due to smoking.

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Tobacco can be consumed in various forms such as a cigar or cigarette, in a smoking pipe, in a water pipe, by a hookah, by chewing or by using finely powdered snuff tobacco, which is sniffed into the nose. But of all these, smoking the tobacco in the form of cigarette, is the predominant form of tobacco used worldwide.

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The chances of smokers becoming afflicted with cancer are very high. Several studies have shown that the various carcinogens in the cigarette smoke can cause cancer. Cancers are most likely to occur in organs like lungs, oral cavity which comes into direct contact with smoke. When the substances delivered in cigarette smoke are absorbed and spread through the human body, smoking causes cancer at various distant sites.

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Lung cancer is the uncontrolled growth of abnormal cells in the lung. Majority of people who get lung cancer have been cigarette smokers, but not all people who smoke get lung cancer. And, some people who have never smoked get lung cancer. Normal lung tissue is made up of cells that are programmed by nature to create lungs of a certain shape and function.,  

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