I smoked tobacco for 7 years prior to using and electronic cigarette. I made the switch over 4 years ago. When I smoked tobacco I was sick very regularly, and it was doing serious damage to my health. When I switched to ecigarettes, my health I proved and I no longer am sick all the time. I started vaping 18-24mg eliquid, and over time I now vape 12mg strength. I also find I do not need to vape all the time, just when cravings hit. I have noticed and improved immune system, I can be more active without losing the ability to breathe, I have more energy, and I overall feel better.