McKinley Health Center -
Information about insomnia and other related sleep problems.
http://www.mckinley.uiuc.edu/health-info/dis-cond/misc/insomnia.html

National Heart, Lung, and Blood Institute -
 Offer facts about insomnia, a four-page brochure that discusses insomnia and how it is treated
http://www.nhlbi.nih.gov/health/public/sleep/insomnia.htm

National Women's Health Center Insomnia Page -
Insomnia related information as well as ways to combat this disorder.
http://www.4woman.gov/faq/insomnia.htm

Online Reference For Health Concerns -
Insomnia and daytime sleepiness - diagnosis and treatment information.
http://www.lef.org/protocols/prtcl-063.shtml

Personal Health Zone Insomnia Center -
 Information on causes and symptoms of insomnia as well as some tips on treatment and prevention.
http://www.personalhealthzone.com/mental_health/disease/insomnia/insomnia2.html

Reuters Health -
Comprehensive source of information about this condition in which presents the sensation of daytime fatigue and impaired performance caused by insufficient sleep
http://www.reutershealth.com/wellconnected/doc27.html

ShutEye.com -
Information and advice on many aspects of sleep problems.
http://www.shuteye.com/

Sleep and Women at Midlife -
Possible causes of insomnia in middle-aged women and suggestions for a good night's sleep.
http://www.womenfirst.com/center.asp?article=75&center=3