| Time since quitting |
Beneficial health changes that take place |
| 20 minutes |
Blood pressure and pulse rate return to normal. |
| 8 hours |
Nicotine and carbon monoxide levels in blood reduce by half, oxygen levels return to normal. |
| 24 hours |
Carbon monoxide will be eliminated from the body.
Lungs start to clear out mucus and other smoking debris. |
| 48 hours |
There is no nicotine left in the body.
Ability to taste and smell is greatly improved. |
| 72 hours |
Breathing becomes easier.
Bronchial tubes begin to relax and energy levels increase. |
| 3 - 9 months |
Coughs, wheezing and breathing problems improve as lung function is increased by up to 10%. |
| 1 year |
Risk of a heart attack falls to about half that of a smoker. |
| 10 years |
Risk of lung cancer falls to half that of a smoker. |