The Progression of Alzheimer's Disease

January 21, 2022

The Progression of Alzheimer's Disease

Alzheimer’s disease (AD) is a slowly progressing, irreversible neurodegenerative brain disease with a long preclinical phase (up to 20 years) and an average clinical duration of 8 to 10 years. The progression of AD is accompanied by changes to the brain that serve as disease biomarkers.

Normal aging vs. Alzheimer’s disease

Alzheimer’s disease symptoms often start subtly. People with early Alzheimer’s disease (and their families) may mistake the early signs for normal aging and put off going to a doctor.
Disease progression typically spans several stages. These stages include preclinical Alzheimer’s disease, mild cognitive impairment (MCI) due to Alzheimer’s disease, and Alzheimer’s disease dementia varying from mild to severe.

  • Preclinical Alzheimer’s disease: individuals with evidence of Alzheimer’s disease pathology who have no clinical symptoms.
  • MCI due to Alzheimer’s disease: evidence of Alzheimer’s disease pathology along with impairment in 1 or more cognitive domains that do not interfere with daily functioning.
  • Alzheimer’s disease dementia (mild, moderate, severe): when cognitive abilities further decline and cause impairment in functional abilities.

MCI due to Alzheimer’s disease is a critical stage of the disease continuum

During this stage, clinicians may be able to detect very early features of Alzheimer’s disease compared to other causes of memory loss or other forms of cognitive impairment. These features can be detected using validated tools such as Mini-Cog, General Practitioner Assessment of Cognition (GPCOG), Memory Impairment Screen (MIS), and Montreal Cognitive Assessment (MoCA).7-9

The time between MCI due to AD and AD dementia is limited

The rate of cognitive decline increases sharply in the years before dementia. Since MCI is the earliest stage of Alzheimer’s disease with observable symptoms, this leaves limited time between diagnosis and dementia—with estimates ranging from 2 to 6 years.1,5,6.
Patients with MCI due to AD have been shown to convert to AD dementia at an annual rate of 31%.

Link to Story

Move and Groove: How Exercise Supports Dementia Wellness

For people living with dementia, staying physically active isn't just about health, it's about feeling alive, connected, and in control. At Village Green Memory Care Community, we make movement part of everyday life. An approach to dementia care assistance in Houston  includes group walk, light stretching, or chair dancing to classic tunes. These programs are […]

Read More
Nature Knows Best: How Outdoor Exposure Supports Cognitive Function

Why Nature Matters in Memory Care At Village Green Memory Care Community, we’ve seen firsthand how the simple act of stepping outside can change someone’s whole day. For residents living with dementia, access to outdoor spaces does more than break up the day. It brings a sense of calm, clarity, and joy. Whether it’s a […]

Read More
Meals with Meaning: How Nutrition and Community Come Together in Assisted Living

At Village Green Memory Care Community, we believe that mealtimes are more than just about food. They’re about comfort, connection, and creating a daily rhythm that feels familiar and warm. In our community, every meal is thoughtfully planned to nourish both the body and the spirit. A Dining Experience That Feels Like Home When it […]

Read More

Phone

Email


© Copyright 2023. 
All Rights Reserved.

Village Green is a Licensed and Certified Alzheimer's Care Home.