Insomnia lasts for years: study

The research shows once people have insomnia they are more likely to report insomnia a year later than to improve

Many people who develop insomnia may find symptoms persist for several years, a recent Canadian study suggests.

Researchers followed 3073 middle-aged adults (mean age 48.1 years) over five years, assessing sleep at baseline and during annual checkups.

At baseline, 1717 participants (55.8%) were good sleepers; 818 people (26.6%) had subsyndromal insomnia; and 538 (17.5%) had insomnia syndrome.

Among participants who were good sleepers at baseline, 13.9% developed insomnia during the study.

In addition, 37.5% of individuals who reported

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