Which stage of Alzheimer's disease is characterized by no impairment and normal functioning?

In the context of Alzheimer's disease, the stage characterized by no impairment and normal functioning is indeed the initial stage. During this stage, individuals do not exhibit any noticeable symptoms and are able to carry out their daily activities without challenges.

It's important to understand that early detection of Alzheimer's typically occurs through observations of subtle changes that others might notice, although the individual themselves may feel that everything is functioning normally. This is why the first stage is often not recognized as part of the progression of the disease since the cognitive functions remain intact and the person can perform their regular tasks without assistance.

As the disease progresses to later stages, signs of cognitive decline and various impairments begin to emerge, making it essential to recognize the initial stage as one of normal cognitive health. This understanding aids caregivers and healthcare professionals in tracking changes over time, leading to better management and intervention strategies.