How Does Smoking Cause Cancer?. Part of the series: Effects of Smoking. Cigarette smoking causes a significant number of cancers, and it is responsible for about a third of the cancer that occurs in the United States. Discover how smoking can lead to cancer of the lip, mouth, tongue, vocal chords, esophagus, stomach, pancreas, urinary bladder and kidney with help from a pulmonary disease research expert in this free video on the effects of smoking. Read more: http://www.ehow.com/video_4784687_smoking-cause-cancer_.html
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