- About a tenth of people has experienced chronic insomnia.
- Insomnia is more likely to happen in women than in men.
- Insomnia is considered one among the most popular sleep disorders with approximately a half of adults reporting having symptoms of insomnia occasionally.
- Insomnia is more likely to affect elderly adults. One of the possible causes of insomnia in the elderly people is the changes in the circadian rhythm, which's considered the most notably advanced sleep phase disorder, causing elderly to go to sleep earlier and rise earlier than most people.
- Insomnia can be more likely in those napping during the day, making sleep more difficult at night.
- Insomnia is reported more among adults with children than those without.
- People that regularly use alcohol and other types of stimulant may report symptoms of insomnia more often.
- People, who are naturally more awake and alert may be more likely to get insomnia.
- People with poor sleep hygiene practices are more likely to report insomnia.
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