•People shown using e-cigarettes or playing a significant role must neither be, nor seem to be, under 25

Whether e-cigarette use precedes smoking or smoking precedes e-cigarette use is a critical question, but it is one which needs to be answered through longitudinal research. We need studies that follow the trajectory of teen tobacco/e-cigarette use over time. That is the only way to determine which comes first.

1. Taking an exam

The rest of the story is that in yet another area of tobacco control science, the Surgeon General's report is providing a biased view of the scientific evidence.

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