Some of the people most likely to have or to develop a sleep problems include:

* People who are overweight, or have some physical abnormality in the nose, throat, or other parts of the upper airway.
* People who habitually drink too much alcohol.
* People with depression and other psychotic disorders.
* Elderly men and women.
* Adults who fall asleep at inappropriate times and places (e.g., during conversation, lecturing, driving) and who exhibit nighttime snoring
* Night-shift workers.
* Post menopausal women.
* Blind individuals who tend to develop impaired perception of light and darkness and have disturbed circadian rhythms, the cycles of biologic activities that occur at the same time during each 24 hours.

Do you have any other reasons which can cause the sleep disorder?