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How much DNA damage e-cigarettes cause depends on the amount of vapor the user inhales, the other additives present, whether nicotine or non-nicotine liquid is used, and other factors, says Karteek Kadimisetty, a postdoctoral researcher in UConns chemistry department and the studys lead author

With each increase in nicotine level from none to low, from low to medium or from medium to high teens were now about twice as likely to report frequent smoking

When I ran some back of the envelope calculations, I was stunned that smoking was so much more expensive than I ever thought

Contact burns, caused by forced contact with a hot object, tend to have the same shape as the object