Polish research also finds increased risk of both sexes being overweight if married
Marriage triples the risk of obesity for men, but does not affect women, according to research.
Global obesity rates have more than doubled since 1990, with more than 2.5 billion adults and children classed as being overweight or obese. Worldwide, more than half of adults and a third of children are predicted to be overweight or obese by 2050.
