Alzheimer's disease is a fatal and progressive brain disorder that results in the loss of memory and cognitive skills. It comes in three stages, starting with mild memory loss and ending with complete loss of physical and mental abilities. While there is no cure, early diagnosis allows people to plan and seek treatments to maximize quality of life, such as herbal remedies, vitamins, diet, exercise, and medications. Scientists are still working to understand the causes and find a cure through stem cell research and brain mapping.