Children who are overweight at puberty gain most of their excess weight by the time they turn 5, British researchers say.
They are following a group of British children from birth to puberty. When born, the children weighed the same as babies did 25 years ago. But by puberty they were heavier. Most of the increase in weight happened before the children started school.
Read more: BBC news, 16 Dec 2008
Read the abstract: Pediatrics, Jan 2009