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Excess coffee drinking linked to brain haemorrhage
2 August 2002
Drinking more than 5 cups of coffee a day may increase the risk of aneurysmal subarachnoid haemorrhage, Norwegian researchers say.
Aneurysmal subarachnoid haemorrhage is a type of brain haemorrhage caused by the wall of a blood vessel in the brain swelling and becoming weak. It then bursts, haemorrhaging into the subarachnoid space, which is normally filled with cerebrospinal fluid.
Drinking this much coffee was nearly 4 times as common in people with ASH than in the control group (Journal of Neurology, Neurosurgery and Psychiatry 2002; 73: 185-87).
People with ASH were more than 4 times as likely to smoke and more than twice as likely to have high blood pressure than people without ASH.
