Alzheimer's disease is a brain disorder and the most common form of dementia, which causes people to lose mental abilities like memory, language, and attention. It was first discovered in 1901 by Alois Alzheimer after examining the brain of a deceased patient named Auguste Deter who had symptoms of memory loss and cognitive decline. While the causes of Alzheimer's are still unknown, risk factors include increasing age, family history, Down syndrome, and female gender. Symptoms include memory loss, problems solving problems, mood swings, and difficulty speaking. There is currently no cure for Alzheimer's.