To add icing to the cake, Medical News Today that: "researchers from this latest study say thirdhand smoke is left on surfaces and ages over time, becoming increasingly more toxic. The team suggests second and thirdhand smoke are just as harmful as firsthand smoke."

As is so often the case, the answer is money.

2. The regulations require pre-approval (or substantial equivalence determinations) for all new electronic cigarette products.

It is worth noting that the conclusions which Dr. Glantz is disseminating are destructive because they undermine decades of public education about the severe hazards of smoking. If the public thinks that smoking is only as risky as vaping, then it is likely that many smokers will decide to continue smoking rather than quitting using electronic cigarettes. And many ex-smokers who have quit with electronic cigarettes may return to smoking, thinking that they might as well since they are not getting any definite health benefit from having made the switch.

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