Heart rate and blood pressure drop
Carbon monoxide level in blood drops to normal
Blood circulation improves, and lung function increases
Coughing and shortness of breath decrease. Lungs are cleansed
The risk of heart attack decreases
The risk of mouth and throat cancers is cut in half
The chances of lung cancer are roughly half compared to someone who continues to smoke
The risk of coronary heart disease is close to that of a non-smoker