I hope you don't mind me sharing I came across this article on the Mercola site linking high intakes of sugar intake and Alzheimer's, which may explain the rise in this neurological condition. Long term, high intakes of sugar can lead to brain shrinkage, what is so surprising is that parents have been giving their children fizzy drinks from such a young age, more so than was seen during my childhood.
It begs the question what will the rise of Alzheimer's be like in the next 40 years.... frightening!