Obesity is 3 times more deadly for men than women and even being slightly overweight raises the risk of dying early.

The study found that obese people can expect to lose 3 years of life while the average overweight person will die 12 months sooner than they would have if they were a healthy size. This is the largest study to-date on obesity and mortality, data was compiled from 10.6 million people who took part in 239 studies between 1970 and 2015, in 32 different countries.