(02.11.2011) A new study published in Circulation shows that chronic insomnia may increase the risk of heart attack. NTNU researchers Lars E. Laugsand, Lars J. Vatten, Carl Platou and Imre Janszky worked with data from the Nord-Trøndelag Health Study, which enabled them to follow more than 52,000 subjects for more than 11 years. Compared to people who didn't have sleep problems, those who had trouble falling asleep had a 45 per cent increased relative risk of heart attack.

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