In a Healthline News report, we highlighted a small study that showed people who smoke e-cigarettes exhale less carbon monoxide. That lends credence to a theory widely held by vapers that damage to the lungs is greatly reduced because e-cigs produce vapor instead of smoke. Other scientists counter that chemicals in e-cig “e-liquid,” or “juice,” … Read more

Yes they can.  Rooster Cogburn gave a good explanation about slowly weaning off the nicotine.  There is no schedule set by others.  You choose.

It will take some experimentation to find the brand of liquid and tanks that suits you.  They vary greatly - thickness and flavor.  Some of the thicker types can cause your lungs … Read more