As for adding nic gum and using only 0mg nic liquid -- WTF? Doctor must own stock in BigPharma cos. Stupidest thing I ever heard . (Not to mention,
expensive.) (Not to mention, adult ladies chewing gum is kind of, well, tacky.)
Nicotine stimulates ("tickles") the trigeminal nerve in the back of your
throat; ergo, the higher the nic level, the bigger the TH. HOWEVER, most of the nic in
e-liquid is absorbed bucally (via mouth tissue), and the vapor is best drawn slowly into your mouth,
not directly into your lungs (yes, you have to re-train yourself on how to "inhale").
EDIT: Wader beat me to the punch, while I was busy being so wordy and opinionated!