As the most common type of Dementia, Alzheimer?s disease is characterized by a person?s gradual loss of memory, ability to problem solve, and reason. Once, only associated with the elderly, there has recently been cases of individuals being diagnosed with early onset Alzheimer?s as young as 50. Even though the etiology is unknown at this time, many scientists believe that there are genetic, environmental and lifestyle factors that contribute to Alzheimer?s onset.