Insomnia and depression are often seen together. Recent studies suggest that insomnia can cause depression. Conversely, since depression is actually due to an imbalance of serotonin in the brain, depression itself can also predispose people to insomnia.
- Worries that come with depression can keep you from relaxing enough to fall asleep.
- Antidepressants often used with depression can also be a cause of insomnia.
- A recent study found that subjects who reported insomnia during the initial phase of research had a higher risk of developing an anxiety disorder during the second portion of the study conducted 10 years later.