Tobacco smoke contains thousands of chemicals, many of which are toxic and dozens of which are known to cause cancer. Every puff affects the airways and lungs.
What smoking does
- Damages the cilia — tiny hairs that sweep mucus and dirt out of the airways
- Inflames and thickens the airway lining, causing chronic cough and phlegm
- Destroys the walls of the air sacs (emphysema), reducing oxygen transfer
- Increases the risk of lung cancer, TB and respiratory infections
The benefits of quitting
Within weeks of quitting, circulation and breathing begin to improve. Over time, the decline in lung function slows and the risk of lung cancer and heart disease falls. It is never too late to stop.
This article is for general education and is not a substitute for personal medical advice. Please consult a doctor about your specific situation.
