What happens when a smoker stops smoking?

When a smoker stops smoking:

In 8 hours, their oxygen level is back to normal.

In 24 hours, their risk of having a heart attack has decreased.

In 2 weeks, lung function has improved 30 percent.

In 10 years, the risk of having a stroke decreases by 50%.

In 10 years, the risk of lung cancer has decreased to the same as non-smokers!

smoking

 

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