In the UK poorer areas are the fattest, since I moved to London the mix of europeans and southern Brits are far more health conscious than the northerners. In manchester/Liverpool/New Castle, in poorer areas all you see is beer bellies...and I'm not talkign about middle aged men, these belonged to teenage girls (usually moms by then to) with a triple chin pushing a baby pram.
Their diet is pretty much frozen meals (pizzas, pies) baked beans, sausages and fish and chips with lots of fizzy drinks...i'd say this sums up 80% of their diet intake if not more, add to this high alcohol consumption and voila, it's Shizzo style mess in no time.