Dr. Vickerman herself that her results do not in any way indicate that electronic cigarettes are less effective than NRT, stating: "It may be that callers who had struggled to quit in the past were more likely to try e-cigarettes as a new method to help them quit. These callers may have had a more difficult time quitting, regardless of their e-cigarette use."

In a previous blog entry, I mentioned knowing what is in your E-Juice, as some substances in your E-Juice could prove to be devastating to your health. Recently there has been quite a stir in the electronic cigarette community regarding the chemical known as diacetyl in E-Juices. Diacetyl is an FDA approved substance that gives a buttery and creamy taste to substances. When ingested it is safe, in fact many of the foods you buy at the grocery store (especially the ones with artificial flavoring) most likely has diacetyl in it. However, when copious amounts of diacetyl is inhaled, it can severely damage your lungs. Long term exposure to diacetyl via inhalation can cause something called obliterative bronchiolitis (also known as popcorn lung) which is a rare syndrome that hinders respiratory function. Obliterative bronchiolitis is when the bronchioles in the lungs are being compressed and narrowed by scar tissue and/or inflammation. Symptoms include severe shortness of breath, wheezing, and coughing. What is so scary about this disease is it is irreversible, and the worst cases of obliterative bronchiolitis would result in lung transplant.

The study finds that e-cigarette use is associated with smoking status. In addition, e-cigarette use is associated with heavier smoking and with fewer periods of smoking abstinence.

Nevertheless, this does not stop the authors from drawing a conclusion. They conclude, despite their acknowledged inability to draw such a conclusion, that: "e-cigarette use is aggravating rather than ameliorating the tobacco epidemic among youths."

First, disclosure of conflicts of interest has become a widely accepted guideline for ethical practice in medicine and public health. Most, if not all, reputable public health and medical journals require authors to disclose any relevant conflicts of interest and most journals publish any conflicts that are disclosed.

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