From what Im able to glean though all my reading is that there has been a debate raging for years between policy makers and researchers regarding
tobacco harm reduction. For that matter, harm reduction for any number of risky behaviors; heroine/methadone, needle exchange programs, etc. Its the same debate that goes on regarding sexual abstinence. Some people feel very strongly that abstinence is the only way to go. Others feel that education, condoms and birth control are way to go.
The same debate is going on regarding tobacco harm reduction. While there have been several studies involving smokeless tobacco as a harm reduction method, e-cigs havent been around long enough to have been studied. In the research world, if it hasnt been published, it doesnt exist. No amount of logic matters. So until there are a few good published studies involving e-cigs, I dont think youre going to see agencies like the CDC, WHO or NIH make any kind of statement other than to say they are unproven and everyone should use approved methods and stop smoking completely.
Interestingly though, I did find a funding opportunity announcement (FOA), issued by the National Cancer Institute (NCI) and the National Institute on Drug Abuse (NIDA) using funds from the NIH for a study that states, The overarching goal of this FOA is to determine whether potential reduced-exposure tobacco products provide a truly, less-harmful alternative to conventional tobacco products, both on the individual and population level. And, Applications to study potential reduced-exposure tobacco products and their potential public health impact are encouraged in, though not limited to, the following areas: (1) Studying behavioral changes that accompany use of new smoked and smokeless tobacco products that are being marketed with health claims and how these behaviors, including possible dual use with other products, impact delivered dosages of addictive agents and toxins, including carcinogens;
The full FOA can be viewed at:
Testing Tobacco Products Promoted to Reduce Harm (R01)