While it is undeniably true that subsequent changes to the tar yield of cigarettes (changes subsequent to the introduction of filters) did not lower the lung cancer risk associated with cigarette smoking, one must be careful in concluding that the introduction of the filter resulted in an increase in lung cancer risk.

• There is no evidence at the current time that kids are starting out with e-cigarettes and then going on to smoke conventional cigarettes.

1. University of Kentucky Cancer Center web site

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