People who suffer from persistent insomnia are also at greater risk of increased inflammation than those who experience intermittent insomnia, the findings showed.

Researchers found that after adjusting for various confounders such as age, sex, body weight, smoking, hypnotics and physical activity, people with persistent insomnia were 58 percent more likely to die during the study than those with no insomnia and that mortality was cardiovascular rather than cancer-related.

The study also determined that serum levels of C - reactive protein (CRP), an independent risk factor for mortality, was higher in people with persistent insomnia.

The investigators assessed the persistence of insomnia complaints in 1,409 adult participants.

The study commenced in 1972 with multiple follow-up surveys to 1996 and continuous mortality follow-up data to 2011 for a total of 38 years.

The study was published in The American Journal of Medicine.

Latest News from Lifestyle News Desk