Stroke risk higher in hour after coffee in occasional consumers
15 October 2010
Occasional coffee drinkers have an increased risk of stroke after consuming as little as one cup of the beverage, according to a study published in the journal Neurology (2010 Sep 29, online).
The US multicentre study of stroke patients, including 304 coffee drinkers, found occasional consumers were twice as likely to have had an ischaemic stroke in the hour after coffee consumption than at other times. The risk was not increased in regular coffee consumers.
Other studies showed coffee increased blood pressure and arterial stiffness, leading to impaired function of the endothelium (lining of the blood vessels), researchers said.
Participants were interviewed 3 days after onset of the stroke and asked about their coffee consumption in the hour before symptoms began and their usual consumption in the previous year.
The risk was seen only among coffee drinkers who consumed less than one cup per day.
Last Reviewed: 15 October 2010
- 1. Mostofsky E, Schlaug G, Mukamal KJ, Rosamond WD, Mittleman MA. Coffee and acute ischemic stroke onset: The Stroke Onset Study. Neurology 2010 Sep 29. [Epub ahead of print]. doi:10.1212/WNL.0b013e3181fb443d). http://www.neurology.org/cgi/content/abstract/WNL.0b013e3181fb443dv1 (accessed 13 Oct 2010).
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