Alzheimer's is a very unforgiving disease that takes away a person's memory and mental function until the world that they live in no longer makes sense. A combination of genetic, lifestyle, and environmental factors that build up and take effect over time are to blame for the tragic loss of brain cells and connections.
While there is no permanent treatment of Alzheimer's disease, there are ways to temporarily improve symptoms, maximize function, and maintain independence. It is also a good decision to seek social services and support networks. There is also no proven way to prevent Alzheimer's, but it is a good idea to stay active and do the same things as one would to prevent heart disease, as the two are believed to have many of the same factors.
As someone with Alzheimer's, things become more and more difficult to do. Even simple and mundane tasks become next to impossible after a while. The world becomes more and more nonsensical as it becomes harder to form complete thoughts and sentences and to understand those around them. It is also extremely heartbreaking for the loved ones of those experiencing Alzheimer's to watch them suffer from the incurable and irreversible disease.