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28 March 2017, 17:07 | Updated: 28 March 2017, 17:16
Do your lungs ever recover back to normal when you quit smoking?
Simon, Oxford Street
Name: Phil, Reading
Qualification: Ex-smoker asked his nurse
Answer: Called a 20-20, if you've smoked more than 20 cigarettes over 20 years, your lungs will never return to normal.