Belfast Telegraph

Saturday 19 April 2014

Too much coffee ‘can wake dead’

Too much coffee not only makes sleeping difficult, but can appear to wake the dead.

People who drink more than seven cups of instant coffee a day have an increased tendency to hallucinate — and may even think they sense ghosts, according to research.

High caffeine users were three times more likely to have heard a non-existent person’s voice than “low” users who consumed less than one cup of instant coffee or its equivalent, scientists found.

Besides coffee, caffeine can be obtained from sources such as tea, chocolate, “pep” pills and energy drinks.

The researchers from the University of Durham pointed out that hallucinations are not necessarily a sign of mental illness and around 3% of people regularly hear voices.

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