I've determined that living is bad for your health! Everything we breath, eat, or drink is bad in some way. And heaven help us if we have to take any medications! The side effect disclaimers take longer than the actual ad for the medication on the tv commercials. We all know that cigarettes kill. Vaping may not be perfectly safe, but it's a far sight better than the cancer sticks. As for me, I was concerned about diketones, but finally broke down and got some CLS and CB. I've read these reports, and it's still a far sight less risk than the amount I ingested smoking 1+ packs a day, and before, in my younger, indestructible days, up to 3 packs. I'll just go with it, try it, and if I like it, I'll keep getting it.