Fortunately, there is a simple way to evaluate this hypothesis, at least on a preliminary basis, prior to waiting for the results of longitudinal studies. Enough youth are experimenting with electronic cigarettes, and the increase in youth e-cigarette use has been dramatic and sustained enough, that if the gateway hypothesis were correct, we would be starting to see an increase in smoking prevalence among youth due to the many new smoking initiates that were converted from e-cigarette experimentation to smoking.
"In the lecture, the Kandels review Denise Kandel’s earlier work on the gateway hypothesis and on the role of nicotine as a gateway drug, reported in a Science paper in 1975. They also review subsequent studies in which they tested the gateway hypothesis experimentally in a mouse model. In those studies, conducted in collaboration with Amir Levine, Yan You Huang, Bettina Drisaldi, Edmund A Griffin, and others at CUMC, they found that when mice are exposed to nicotine, it alters their brain biochemically and induces activation of a reward-related gene. As a result, nicotine primes the animals’ subsequent response to cocaine, providing a molecular basis for nicotine as a gateway drug for cocaine. Dr. Denise Kandel’s further analysis of 2004 epidemiologic data from a large, longitudinal sample suggested that nicotine also primes human brains to respond to cocaine." ...
The bottom line is that Senator Rockefeller is a typical politician and a classical hypocrite. He is also completely disingenuous. Were he truly committed to protecting kids from addiction to flavored tobacco products, he would never have sold out to Philip Morris by sponsoring and supporting legislation that exempted menthol from the cigarette flavoring ban. Even now, if he truly cared about the actual health of children, instead of attacking the e-cigarette industry, he would have devoted his time and energy to crafting and sponsoring legislation to ban menthol from cigarettes.
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