10 years after you quit smoking your risk of lung cancer is 50% lower than it would be if you hadn’t quit.
This is because the damage done to the cells in the lungs takes time to heal. Quitting smoking is one of the best things you can do for your health. Your lungs begin to heal and regain their ability to clean themselves out very soon after you quit smoking. Your lungs have little hairlike things in them called cilia that act like millions of bristles of a broom. Together they help keep your lungs clean of particles. But smoking damages them and decreases how many cilia you have.
6 months after quitting smoking, your cilia are back up and running to full capacity!