Lie-ins may be an early sign of dementia research suggests

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Telegraph.co.uk

Sleeping late in the mornings or napping in the afternoons doubles the chances of being diagnosed with Alzheimer's disease, the elderly are warned.

By Pat Hagan

Research has found that people aged over 65 who sleep more than eight or nine hours a night may be twice as likely to develop the deadly condition as those getting six to eight hours.

Napping during the day may also have the same effect.

The reason remains unclear but researchers believe excessive sleep could be an early sign of the disease. It's also possible that staying in bed is a sign of depression, a known risk factor for dementia in the elderly.

Now researchers are urging doctors to be on the lookout for long sleep as a warning that a patient is at risk.

Alzheimer's affects an estimated 24 million people worldwide and the number is expected to grow as the population lives longer.

Most die within ten years of being diagnosed, and the cost of caring for victims is more than stroke, heart disease and cancer put together.

The disease destroys chemical messengers within the brain and starts with the build-up of deposits – called plaques and tangles – that can disrupt normal messaging systems by causing inflammation.

The cause remains........read all of early sign of dementia