Insomnia causes sleep deprivation which caries with it some serious Health risks:

Medical problems:
  • Heart Attack
  • High Blood Pressure
  • Stroke
  • Diabetes
  • Obesity
  • Accelerated aging

All of the above have been associated with sleep deprivation.

Other consequences are regularly reported:

The most prominent sign of sleep deprivation is sleepiness. You know from your own experience that daytime sleepiness will follow just one night of very little sleep. You may not realize that the same effects can come from small amounts of lost sleep, adding upover time.

Psychological Effects
Sleep deprivation can dramatically alter your emotional well being. In severe cases people can become aggressive or suspicious. Misperceptions, illusions and hallucinations have also been reported. Even small amounts of sleep deprivation can result in depression, anxiety or irratability. Often people will seek theraputic care for these emotional problems when sleep deprivation is the culprit.

Mental Effects
The effects of mental deprivation on performance has been demonstrated time and again. A sleep deprived person may find that their performance is impaired when they have to respond to a simple task like a prompt from a computer or remembering items on a grocery list.

Hormones and Sleep
Hormones are chemicals that are produced by the bodys gland. They control the body's functions. Hormones are produced in daily cycles many of which happen during certain stages of sleep. The Hormonal changes that follow sleep deprivation could cause serious health problems.

Sleep and the Immune system
Sleep deprivation has been related to immune function. The immune system protects the body against viruses, bacteria and harmful substances. Recently scientists have been investigating the possibility that sleep deprivation compromises this complex system. The studies suggest that sleep is vital to the regulation of immunity and that even a small deficiency in sleep reduces it.

Perhaps the greatest danger of sleep deprivation takes place on our highways. A sleep deprived person who operates an automobile puts herself and others at risk. Besides driving, consider the dangers caused by a sleep deprived pilot, doctor or police officer. This list goes on and on.