All smokers have some kind of lung damage due to traditional smoking. ecigs produce a water like vapor which does not contain tar.
Your lungs have hair like projections called cilia. They basically sweep out foreign particles that are inhaled into the lungs. Things like dust, viruses, bacteria.
When a person starts smoking, the cilia start to slow down, eventually becoming paralyzed and destroyed.
When a person quits smoking, cilia will start to regenerate within a few days. Within six months, the cilia is usually fully regenerated.
If you quit smoking and then occasionally smoke, the cilia will not fully regenerate. The lungs are amazing machines. They can heal themselves over time if given the chance.
