There is a clear link that as countries adopt a westernized life style, that's when we really start to see more or to a new disease developing. The biggest risk factor for developing pretty much any of these diseases is actually genetic. So if you're not particularly genetically predisposed to getting an autommune disease, any of the triggers that might set offer a disease in some one else will almost certainly have no effect on you at all. But i think what's become clear is that the increases we are seeing are far more than we would ever expect to see simply by being more aware of these conditions.