Crosswords could delay onset of dementia but speed up eventual decline, study claims

The research was published on Neurology online and conducted by researchers at Rush University Medical Centre in Chicago. Scientists evaluated the mental activities of 1,157 people aged 65 or older without dementia over just under 12 years. Using a five point scale it found the rate of cognitive decline in people without cognitive impairment reduced by 52 per cent for each point on the cognitive scale. For people with Alzheimer's disease, the rate of decline increased by 42 per cent per point.

Alzheimer's Society comment:

'The jury is still out on whether pouring over a crossword or enjoying a good book could keep your brain ticking over for longer. This robust study adds considerable weight to the argument that, at least in later life, it could and it may even delay the symptoms of dementia.'

'However although the symptoms are delayed, there is no evidence changes in the brain associated with dementia have been reduced. That the brain is allowed to deteriorate to a larger degree before symptoms like memory loss become apparent could explain why the condition seems to progress more quickly after diagnosis. More research is now needed to establish why this happens and what role mental stimulation may have in keeping people functioning for longer.'

Dr Susanne Sorensen

Head of Research
Alzheimer's Society

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Research reference: 'Cognitive activity and the cognitive morbidity of Alzheimer disease' by RS Wilson et al. Neurology online, 1 September 2010.

Notes to editors:

• One in three people over 65 will die with dementia
• Alzheimer's Society research shows that 750,000 people in the UK have a form of dementia, more than half have Alzheimer's disease. In just 15 years a million people will be living with dementia. This will soar to 1.7 million people by 2051
• Alzheimer's Society champions the rights of people living with dementia and the millions of people who care for them
• Alzheimer's Society works in England, Wales and Northern Ireland
• Alzheimer's Society supports people to live well with dementia today and funds research to find a cure for tomorrow. We rely on voluntary donations to continue our vital work. You can donate now by calling 0845 306 0898 or visiting alzheimers.org.uk
  
• Alzheimer's Society provides a National Dementia Helpline, the number is 0845 300 0336 or visit alzheimers.org.uk