Minitata - some good points and there's no doubt we are all extremely lucky to be living in the UK. I would never argue that!
However, seeing a fat person in the Western World in no way implies poor. Sadly, it points to the sedentary lifestyle many of us lead and the food choices we make. Now, before I get hacked to bits for saying that, I do not just mean at a personal level. Yes, I believe we do need to take more personal responsibility for our lifestyle but we also need our leader's to help us by giving us the correct information and accepting that our health is more important than the mighty dollar!!
My chief concern is that as poorer parts of the World develop they will follow the Western pattern. A large well known fast food outlet is in every continent except Antarctica. The only continent it does not have a real presence in yet is Africa. For how long? Rest assured, once people can afford something and the Government can profit from it too it will happen. Regardless of how good or bad it is.