Smokers gain up to 5kg after giving up habit

Former smokers gain 4 to 5kg in weight after they kick the habit, research suggests.

Researchers, based in the UK and France, found that former smokers gained an average of 4.67kg in the 12 months after they quit.

Analysing the results from 62 studies, the authors discovered that in the first three months after giving up, people gain an average of 2.85kg. But, writing on, the researchers say there was a large variation, with 13 per cent of people gaining more than 10kg and 16 per cent losing some weight.