As neuropsychologist Dr. Glenn Smith wrote:
"Caregivers become the memory for their loved one with Alzheimer's disease. By gathering memories, you can bring important events and experiences from your loved one's past into the present. You're the link to his or her life history."
This is why families who are faced with the onset of dementia in a client need act quickly to preserve memories of the patient before memory loss or death make it impossible.
I know this from personal experience since my father suffered from the disease. It was hard on the family, especially for my mother who bore the weight of care. A completed Life Story would have eased my father's anxiety and served as a source of comfort for us all.