Alzheimer’s disease is devastating both for those who suffer from it and for those who love them. It is also expensive. It’s estimated that the current worldwide cost of coping with Alzheimer’s is $818 billion. A cure for Alzheimer’s is not available and current treatments for the disease focus on mitigating symptoms rather than eliminating causes. Recent research has provided evidence that the memory loss associated with Alzheimer’s may be preventable and reversible. Now, new research published in the Proceedings of the National Academy of Sciences reports on a gene therapy treatment that stopped the development of Alzheimer’s disease dead in it’s tracks.