One in 11 people aged 65 and over have dementia in the UK, the NHS said. And according to Alzheimer’s Society, a person’s risk “roughly doubles” every five years after around 70.
But while it might take decades for symptoms to show, researchers increasingly think markers of coming dementia can begin years before diagnosis.
And a recent paper in Springer Nature has suggested that a biomarker in people’s blood – pTau181, which is linked to a higher dementia risk – might hint at a greater likelihood of developing the condition when seen in 45-year-olds.
“Although plasma pTau181 has been shown to accurately discriminate patients with Alzheimer’s disease...
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