Lungs possess the ability to heal from the damage caused by smoking, but the extent and speed of recovery can vary based on factors like the duration of smoking and the age at which an individual quits. Once you stop smoking, the damage to the lungs ceases, and the healing process begins. This process involves the replacement of damaged cells with new, healthy cells, improving lung function and decreasing the risk of lung diseases, including lung cancer. Although long-term smokers may face a longer path to recovery and might have some irreversible damage, they will still experience significant health benefits upon quitting. From the moment you quit smoking, the body initiates its healing process. Blood pressure and heart rate drop to healthier levels within minutes. Carbon monoxide levels in the blood normalize in a few days, while lung function and circulation begin to improve within a few weeks to months. Over the years, the risks of heart disease, strokes, and cancer diminish.