<human>:  What are the effects of smoking on the lungs?
<bot>: The effects of smoking on the lungs can be severe and long-lasting. Smoking can cause damage to the lungs' airways, increase your risk for lung cancer, COPD, and create long-term respiratory issues. Smoking can also make the lungs more prone to infection and can damage the air sacs (alveoli) in the lungs which can reduce their ability to take in oxygen.