Does your lungs from smokin and liver from drinking heal after you've stopped?

Your liver is the only organ in your body that can repair itself, but obviously if you damage your liver to a huge extent then it will just pack up. As far as your lungs go.... it takes about 15 years to get to the same risk category for cancer as a non smoker, but giving up will see an improvement in 24 hours because your little tubes in your lungs start to relax and help you breath more easily.