I was a 16 year pack a day smoker, I switched to e-cig with the refillable tanks and haven’t touched a Tabbacco cigarette since. That’s been 3 years!! My overall health, stamina, taste & smell has improved dramatically. When I smoked I couldn’t run for more then 15 minutes without running out of breath and getting fatigued rapidly. Now I can run for 45 minutes without stopping!! When I started the e-cig I had 12 mg nicotine, now I’m a .6 very low. I think even when I go to a 0 nicotine level I will still vape occasionally because the flavors are incredible!