Alzheimer's Disease is cruel and unrelenting. It quickly destroys a person's life, stripping them of their personhood and character. In a lifetime, fortunately, it usually strikes later, although it does not always spare the young either. What makes it even more horrible, if such were possible, is that, in our present state of knowledge, there are no really useful treatments. So when some glimmer of hope eventually does come along, it is naturally of some considerable interes