Insomnia now linked to heart attack, stroke

Less or troubled sleep can lead to stroke, heart attack or other cerebrovascular or cardiovascular diseases claims a new study. The findings were published in the study published in the journal — Neurology. “The results suggest that if we can target people who are having trouble sleeping with behavioural therapies, it’s possible that we could reduce the number of cases of stroke, heart attack and other diseases later down the line,” said study author Liming Li, MD, of Peking University in Beijing, China.

The study involved 487,200 people in China with an average age of 51. Participants had no history of stroke or heart disease at the beginning of the study. Participants were asked if they had any of three symptoms of insomnia at least three days per week: trouble falling asleep or staying asleep; waking up too early in the morning, or trouble staying focused during the day due to poor sleep.

A total of 11 per cent of the people had difficulty falling asleep or staying asleep; 10 per cent reported waking up too early, and 2 per cent had trouble staying focused during the day due to poor sleep.

The researchers did not determine if the people met the full definition of insomnia. The people were then followed for an average of about 10 years. During that time, there were 130,032 cases of stroke, heart attack and other similar diseases.

People who had all three symptoms of insomnia were 18 per cent more likely to develop these diseases than people who did not have any symptoms. People who had trouble falling asleep or staying asleep were 9 per cent more likely to develop stroke or heart disease than people who did not have this trouble. Of the 55,127 people who had this symptom, 17,650, or 32 per cent, had a stroke or heart disease, compared to 112,382, or 26 per cent, of the 432,073 people who did not have this symptom of insomnia.