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Long-Term Study Links Chronic Insomnia to Increased Risk of Death

People with chronic insomnia have an elevated risk of death. Research indicates that the adjusted hazard ratio for all-cause mortality was three times higher in people with chronic insomnia.

The risk of death was elevated for all subtypes of insomnia. The risk of death was highest in individuals with chronic early-awakening insomnia or chronic sleep-maintenance insomnia associated with difficulty getting back to sleep.

According to Science Daily:

“The study involved 2,242 participants ... who completed two to three mailed surveys for years 1989, 1994 and 2000. Participants were considered to have chronic insomnia if they reported insomnia symptoms on at least two of the surveys. A social security death index search in May 2010 determined that 128 participants had died during a follow-up period of up to 19 years.”

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