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Study: Mice that vaped nicotine for a year had big increase in tumor growth

New research in mice suggests that long-term exposure to vaping liquids that contain nicotine greatly increases the risk of cancer.  After breathing in the vapor for 20 hours a week for more than a year, 22.5% of the mice had cancerous tumors in the lining of the lungs, and 57.5% developed growths in their bladder tissue that can be precursors to cancer.  Read more.....

 

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