For me it seems less harmful than a regular cigarettes which contain hundreds of other chemicals that can affect ur health, but still there are not enough fair researches been done regarding the vapor and the chemicals that the e cig generate after heating the liquid nicotine and flavor material and the PG or VG base ? also not enough researches done on how the alveolar sac responded to the fumes and vapor in short and long term exposure, what about restrictive lung disease or lung fibrosis or atelectasis or lung cancer, heart disease ad atherosclerosis ?from long term use??? does it exist and if so how its compared to the regular cigs?? there are a lot of mysteries needs to be uncovered.
So i would love to ask you guys who are have been smoking e cigs for a while to post in this thread when did u start using e cigs and for how long and whats the does and if u doing great or got sick, and what signs and symptoms did u develop while on it ??
how do u compare your health and well being since u started e cig with previous regular smoking ???
any of u had a CT scan or MRI done since they started E cig smoking and for what reason??
do u breath deeper and did u lose the morning cough and sputum?
do u exercise better and feel less weak and fatigue since u shift to e cig?
do you feel healthier ???
any other GI or Skin or Cardiovascular or CNS symptoms since u start ??
I will try to carry a research on this in my free time and i need ur help so that can point me in what direction the symptoms are going?
I graduated with MD degree in 1999 and I love to help uncover the mysteries of the e cig and if its the right way to go or not without being biased.
I just got very curious because there is not enough info about e cig smoking serious health related issues , so either its safer than regular cig

or it might need longer exposure? or we just need to collect our own data from the people who use it to help uncover some of the mysteries and help direct lab work to early diagnose any related issue and to help your doctor understand how common that symptoms among e cig smokers and that may help him/her provide u of better care .
please keep us updated about any health issue or symptom e cig related or u might think its related so we can see whats related and whats not and how common that symptoms is.
withdrawal symptoms should be differentiated from e cig related symptoms and also allergic reactions and how common are they?
don't post any personal info, just interested in the symptoms.
Lets Just get more knowledgeable about it

Peace to All