Myth 1: Memory loss is a natural part of aging. Reality: As people age, it's normal to have occasional memory problems, such as forgetting the name of a person you've recently met. However, Alzheimer's is more than occasional memory loss. It's a disease that causes brain cells to malfunction and ultimately die. When this happens, an individual may forget the name of a longtime friend or what roads to take to return to a home they've lived in for decades.