Chronic Insomnia: Less Brain Gray Matter in Older Adults

A new study from The Netherlands examined regional brain volume in people with insomnia.The study involved 24 adults with chronic primary insomnia. They were between the ages of 52 and 74 years. Seventeen of them were women. They were compared with 13 people who had no sleep problems.Results show that people with insomnia had a smaller volume of gray matter in the left orbitofrontal cortex.