Half will develop dementia within five years of diagnosis.
Dementia and vitamin B researcher Professor David Smith said: ‘Alzheimer’s is a preventable disease, not an inevitable part of the ageing process.
It measures mild cognitive impairment – or the slight memory lapses that can be a precursor to Alzheimer’s – which affects one in six aged 70-plus, or 1.5million Britons.
This is likely to make it popular with those who fear their memory is failing but are too embarrassed to discuss their worries with their doctor.
The test, which is free to take, follows a landmark Oxford University study published last year which credits a simple vitamin pill with cutting brain shrinkage linked to Alzheimer’s by up to 500 per cent.
'They eventually settled for placing 0,000 on Post-It Notes, with a back-up ,000 on Sony Walkman, although Gabe told host Kevin Pollak he was sure of his answer.
However, the chute opened and consumed the larger wedge, leaving inconsolable Gabe crouching in a corner unable to go on with the game.