My Family With Alzheimer's Disease

When it comes to the Alzheimer's Disease, nobody in my family has this disease. I do know someone who family member that had the Alzheimer’s Disease. My boyfriend great grandmother was the one with the disease. I could remember him telling me how she was first with the Alzheimer’s Disease. She would start cooking something to eat then forget that was cooking. Other times she would misplace certain items around the house and would think someone had broken into the house. Later his family moved her in with her daughter, which was his grandmother house. She went from going places by herself to not being able to do for herself. It was like her memory went backwards, from knowing people in the present to only remembering people from her