Between 10% and 30% of adults have<unk>  at any given point in time and up to half of people have<unk>  in a given year. About 6% of people have<unk>  that is not due to another problem and lasts for more than a month. People over the age of 65 are affected more often than younger people. Females are more often affected than males.<unk>  is 40% more common in women than in men. There are higher rates of<unk>  reported among university students compared to the general population.
Insomnia
Delayed sleep phase disorder
Parasomnia
Restless legs syndrome
Hypersomnia
Mental disorder
Dyssomnia
Sleep apnea