Commenting on the findings, published in The Lancet medical journal, Professor John Newton, of Public Health England, said:
The levels of obesity in the UK - and indeed, across the world - are of great concern.
That is why Public Health England is putting in so much effort to attempt to reverse the trend.
The challenge of obesity is at the heart of current debate about the health of the nation and we are working closely with local authorities, the NHS and the voluntary and community sector to tackle this complex issue.
More top news
Stephen Fry has suggested that the "the patter of tiny feet" may be on the agenda following his wedding to Elliot Spencer.
More than a million adults in the UK may have been wrongly diagnosed with asthma, according to an NHS watchdog.
A whisky advert featuring David Beckham has been cleared by the advertising regulator.