Disease Areas

Alzheimer’s Disease
Te Tuapaemahara

Alzheimer’s Disease

Te Tuapaemahara

Alzheimer’s disease - Te Tuapaemahara, the most common form of dementia mate wareware, is a progressive neurological illness that impairs thinking and the independence of millions of people worldwide.1 Today, more than 55 million people live with dementia worldwide, and Alzheimer’s disease may contribute to 60-70% of cases.2

Alzheimer’s disease is usually diagnosed in people 65 years and older, but it starts earlier, with subtle neurological changes occurring years or even decades before symptoms appear.1 Many people are experiencing the early, often unrecognised signs of mild cognitive impairment.3

Our Approach

Driven by our commitment to people living with Alzheimer’s disease and their carers, along with our strong business foundation, Biogen remains dedicated to furthering research and investigating treatment options, aiming to help address the unmet needs in this devastating condition, with an emphasis on early-stage disease.

Innovative Research

We understand how incredibly challenging it is to treat this complex condition, which is why we will never stop innovating for those living with the condition, their families and service providers in the Alzheimer’s community. We are currently conducting clinical trials to evaluate the efficacy and safety of investigational therapies in our pipeline, including Alzheimer’s disease.


Scott's story

When Scott was 59 years old, he and his wife Jill began noticing some changes in his cognition. Scott was struggling to find the right words in conversations and was having difficulties problem solving and remembering names.

Understanding Alzheimer’s Disease

As they get older, many people may notice changes in memory and thinking abilities. At first, these changes may be so subtle that they’re easy to explain as normal aging — and they may be. However, it’s also possible that they’re the earliest symptoms of Alzheimer’s disease.

Facts and Figures


Alzheimer's disease is the most common cause of dementia mate wareware, accounting for an estimated 60–70% of cases.2


Currently more than 55 million people live with dementia mate wareware worldwide, and there are nearly 10 million new cases every year.2


Approximately 75% of people with dementia mate wareware are not diagnosed globally, with that rate believed to rise as high as 90% in some lower- and middle-income countries.4

  1.  Johns Hopkins Medicine. Alzheimer’s Disease, 2024. Available at: https://www.hopkinsmedicine.org/health/conditions-and-diseases/alzheimers-disease.
  2. World Health Organization. Dementia, 2024. Available at: https://www.who.int/news-room/fact-sheets/detail/dementia
  3. Alzheimer’s Association. Mild Cognitive Impairment (MCI), 2024. Available at: https://www.alz.org/alzheimers-dementia/what-is-dementia/related_conditions/mild-cognitive-impairment.
  4. Alzheimer’s Disease International. World Alzheimer’s Report 2021. Available at: https://www.alzint.org/resource/world-alzheimer-report-2021/

Breaking New Ground With Science