Positive changes in the lungs begin within two weeks to three months after quitting smoking.
According to doctor Marina Makarova, lungs have a high regenerative capacity, but some damage may be irreversible.
Recovery level depends on age, smoking duration, and existing chronic diseases. Quitting smoking restores the mucous membrane, regrows cilia, reduces oxidative stress, and improves blood circulation.
As a result, coughing decreases and shortness of breath disappears.
