This polarization is a disappointment to me, but I guess in an era where ideological-driven debates are raging over climate change, gun control, and immunization, I should not have expected this one to be any different.

In other words, what the CDC is saying is:

In other words, despite acknowledging that they cannot tell from their study whether e-cigarette use precedes smoking or whether smoking precedes e-cigarette use, they nonetheless draw the conclusion that e-cigarette use precedes smoking.

According to a "" on the Americans for Nonsmokers Rights (ANR) web site, short-term use of electronic cigarettes impairs lung function and can cause difficulty breathing:

3. Tobacco companies are promoting electronic cigarettes as being safe.

Incidentally, the Reynolds/Lorillard lawsuit seeks to have Drs. Benowitz, Henningfield, and Samet dismissed from the FDA's TPSAC (Tobacco Product Scientific Advisory Committee) panel because of these conflicts of interest. While these conflicts do not preclude the participation of these scientists as authors of the Surgeon General's report, they absolutely must be disclosed to the public.

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