1. Increased forgetfulness, especially forgetting recent events and names of people; 2. Inability to live independently; 3. Inability to do activities such as cooking, cleaning or shopping independently; 4. Becoming very dependent; 5. Decreased ability to take care of oneself, such as going to the toilet, washing clothes and dressing, etc., requiring help from others; 6. Gradual difficulty in speaking; 7. Aimless wandering and other abnormal behaviors; 8.