However, data is limited so no conclusions can be drawn.
It has been claimed that insomnia causes depression and hypothesized that insomnia medications may help to treat depression.
The review found that almost all trials of sleep disorders and drugs are sponsored by the pharmaceutical industry.
It was found that the odds ratio for finding results favorable to industry in industry-sponsored trials was 3.6 times higher than non-industry-sponsored studies and that 24% of authors did not disclose being funded by the drug companies in their published papers when they were funded by the drug companies.
Cognitive-behavioral therapy (CBT) for insomnia, on the other hand, has been found to both improve sleep quality as well as general mental health.
Nonbenzodiazepines should not be discontinued abruptly if taken for more than a few weeks due to the risk of rebound withdrawal effects and acute withdrawal reactions, which may resemble those seen during benzodiazepine withdrawal.