The FAST scale

Families are rarely given a clear, practical way to understand how Alzheimer’s progresses. The FAST scale is one of the few tools that helped me make sense of what I was seeing, and it gave me a way to prepare, plan, and talk about dementia without fear or vagueness. I can’t reproduce the scale here, but I can explain why it mattered to us.

The Functional Assessment Staging Test (FAST) is the most thoroughly validated tool for charting the progression of Alzheimer’s disease in the scientific literature, and it is used internationally. It describes Alzheimer’s progression in stages numbered 1–7, with stages 6 and 7 further subdivided.

Why FAST mattered to us

The FAST scale helped me make sense of the way Lynn’s cognitive abilities gradually regressed. It gave me a clearer framework — partly to steady myself while providing day‑to‑day care, and partly to prepare for what was coming next. It also helped me understand that regression in Alzheimer’s is not random; it follows a recognisable pattern, even if the timing varies.

Why FAST helped our Coffee Club

When our Coffee Club began using FAST, it gave us a shared language. Instead of vague terms like “getting worse” or “struggling more,” we could talk about specific changes and what they meant. It helped carers compare experiences without judgement, and it helped us support one another with more clarity and confidence.

Why FAST is different from the NHS approach

In the UK, the NHS typically refers to dementia in broad terms: Early, Middle, and Late stage. I found this unhelpful. It reinforced the idea that professionals would tell me what I needed to know only when they felt the time was right. That approach did not help me prepare for what lay ahead, nor did it support me in providing the best care I could.

FAST gave me something the NHS framework never did:

  • a sense of orientation
  • a way to recognise what was happening
  • a way to plan
  • a way to talk about dementia without fear or vagueness

It didn’t remove the emotional weight — but it helped me carry it.

A gentle note before you explore FAST

FAST describes the progression of Alzheimer’s disease, which is generally understood to follow a recognisable, linear pattern. Other dementias — such as vascular, Lewy body, or frontotemporal — do not always progress in the same way, and FAST is not wholly applicable to them. Even within Alzheimer’s, every person moves through the stages at their own pace.

If you choose to look at the FAST scale, take it slowly. You don’t need to understand every stage at once. Use it only when it helps you make sense of what you’re seeing today, and set it aside when it feels overwhelming. It’s a tool for orientation, not a prediction.

Using FAST taught me something that no professional ever explained: carers cope better when they have a clear sense of what they’re seeing and what may come next. Families provide most of the hands‑on care, yet they are rarely given the tools that help them understand the journey. Educating the unexpected family carer is the fastest, lowest‑cost, most humane way to improve dementia care — and FAST was one of the tools that helped me find my footing.