Child obesity rates indicate a class divide

Research in England suggests that child obesity trends suggest that there will soon be a class divide: wealthier, skinnier children and poorer, fatter children, according to the BBC.
From the website:
Currently 6.9% of boys and 7.4% of girls are obese – with the difference between the lower and higher classes 0.6% and 1.5% respectively for boys and girls.
But using historical trends, they predicted that by 2015 obesity rates could be above 10% for boys and 8.9% for girls…
The obesity rates for girls are likely to diverge from now on, the team said.
Among those from lower classes it is expected to keep rising to 11.2%, while for those from professional backgrounds it is likely to fall to 5.4%.
Among boys, both groups are likely to see a rise, but it will be faster in the lower class group, meaning 10.7% of this class boys will be obese compared with 7.9% of those from wealthier backgrounds.