Updated January 22, 1999

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Early to Bed, Early to Rise? - An article about how the CLOCK gene determines if we are an owl or a lark.

Are you an owl or a lark? - Another story about the CLOCK gene.

Today we live in a 24-hour society. More than any other time in history, we sleep less and work and play more. Since Edison invented the lightbulb, we have toyed with our biological clocks that tell us to sleep when it is dark. It is not suprising that it has begun to take its toll on us. Nearly all of us have had trouble sleeping at one time or another. Here are some the disorders that we now face.

What are Circadian Rhythm Sleep Disorders?

Circadian Rhythm Sleep Disorders are disorders that are related to the timing of sleep within the 24-hour day.  Some of these disorders are influenced by the timing of the sleep period that is under the individual's control (e.g., shift work or time zone change). Others in this group are disorders of neurological mechanisms (e.g., irregular sleep-wake pattern and advanced sleep phase syndrome).

The disorders are:





Circadian Learning Center

Circadian Information serves managers and workers in round-the-clock operations, helping to increase human alertness. They provide objective, authoritative information and resources to help improve health, safety and performance of workers. In so doing, they create a win-win outcome -- workers get improved quality of life and employers get higher worker morale, reduced legal risks and a more productive workforce.

Circadian Information publishes the monthly ShiftWork Alert&tm; Newsletter, the Shiftworker Family Calendar&tm;, Working Nights&tm; and other books and pamphlets about different aspects of shiftwork and fatigue management.

Circadian Information is part of the larger Circadian Group, which includes a consulting firm, Circadian Technologies, Inc., that advises companies on biocompatible shift schedules and conducts shiftworker lifestyle training.

Circadian Rhythms and Shiftwork--The Emergency Room Physicians - American College of Emergency Physicians

Emergency room physcicians often have to work long hours and shifts. The American College of Emergency Physcians now has a policy on this topic. Read the Emergency Physicians Shift Work Policy.

Peter's Circadian Rhythms -- Peter's personal ideas about shiftwork and a quest to find other shiftworkers like himself for an informal survey.

Please note: If you see a mistake, or wrong information, please E-mail: Nodmaster. We welcome your comments, suggestions, or notification of sleep related information.

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