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Alzheimer's Day 2021: What causes it? What we know, don't know and suspect

Alzheimer's Day 2021: A hallmark of Alzheimer's disease is gradual deterioration of memory. Here's all you need to know about the disease on World Alzheimer's Day 2021

Photo: iStock
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Photo: iStock

Yen Ying Lim, Rachel Buckley | The Conversation
Alzheimer’s disease is the most common form of dementia, which is an umbrella term used to describe general loss of memory, thinking skills and other day-to-day functions (such as cooking, paying bills, cleaning and even dressing).

A hallmark of Alzheimer’s disease is gradual deterioration of memory. But it is a biological disease, which means that, besides seeing outwards symptoms such as memory loss, we can also measure the breakdown that occurs in the brain as a consequence of disease progression.

Alzheimer’s is identified by the presence of two proteins in the brain, known as