> Rhythm Disorders

DSPS (7) S.A.D. (13) Jet Lag (12)

Artificial Light and Breast Cancer
A news release from the National Institute of Health tells us: "Results from a new study in laboratory mice show that nighttime exposure to artificial light stimulated the growth of human breast tumors by suppressing the levels of a key hormone called melatonin. The study also showed that extended periods of nighttime darkness greatly slowed the growth of these tumors."

Blindness and Sleep Disorders
Researchers in New Zealand are beginning a study of sleep problems of the blind. Many people who suffer from vision problems also suffer from chronic sleep disorder. This study will investigate the prevalence of these problems and the efficacy of the hormone melatonin in their treatment.

Circadian Rhythm Research
Jet lag is caused when someone travels across several Time Zones quickly, as in a jet. Ongoing research into circadian rhythm and the biological clock has produced much that is new over the past four years.

Sleeping on the Job
Is sleeping on the job beneficial?   This article from your About.com Guide to Management discusses this question.

Tick, Tock, the Biological Clock
An article on circadian rhythm and the mechanism of the body clock, from your About.com  guide to Biology..

Book Review - The Body clock Guide to Better Health
This book by Lynne Lamberg and Michael Smolensky explains the use of time in caring for and healing the body. This new branch of medicine is called chronotherapy.

Sleep and Your Biological Clock
According to an article published in the January 2003 Journal of Clinical Endocrinology, researchers at the National Institute of Mental Health in Bethesda, Maryland, have discovered that some people need a lot more sleep than others do.

Duke Nukem and the Death of Dreams
Dr. John Herman, a sleep expert at UT Southwestern Medical Center at Dallas, reports that the flashing lights on computer games and TV shows may be resetting the circadian rhythm.

Your Ticking Clock
The Circadian Rhythm - that essential life beat that keeps your body in tune with the world,  from your About.com Guide.

The Teenage Body Clock
It's that time of year again and all over the nation, schools are back in session, and many teens aren't getting the sleep they need.