
A new study has suggested that putting on weight while giving up smoking may reduce the benefits of quitting in the first place.
Researchers in the UK found that people who put on a lot of weight when quitting smoking can suffer weaker lung function.
They studied 6,000 people in 27 different countries over 10 years. The effects of stopping smoking and putting on weight on lung health were monitored.
The results showed that ex-smokers with weight gain had weaker lungs than ex-smokers who had not put on any weight. The researchers also calculated that if a man quit smoking and gained 1kg of weight a year, he would see no improvement in lung function. If a woman gained roughly 2.4 kg a year after quitting, she would also see no health benefits.