Jet Lag News and Research

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Jet lag, medically referred to as "desynchronosis," is a physiological condition which is a consequence of alterations to circadian rhythms; it is classified as one of the circadian rhythm sleep disorders.

Sildenafil increases release of key reproductive hormone oxytocin

Researchers at the University of Wisconsin-Madison report this month that sildenafil increases the amount of oxytocin released by stimulation of the posterior pituitary gland, a small structure directly underneath the brain that regulates hormone levels in response to neural signals.

24 Aug 2007

It may be 'altitude sickness' rather than jet lag but you still feel rotten

A study has revealed that many of the effects of long-distance flight which are usually put down to jet lag and fatigue, may in fact be altitude sickness.

5 Jul 2007

RAS signaling of circadian output

In the June 15th issue of G&D, Drs. Jay Dunlap and Jennifer Loros, with colleagues at Dartmouth Medical School, have finally cloned the band gene, and have found that it is an allele of ras-1.

17 Jun 2007

New findings on jet lag

Circadian clocks regulate the timing of biological functions in almost all higher organisms.

24 May 2007

Circadian clock gene plays role in weight gain

Scientists at the University of Virginia and the Medical College of Wisconsin have discovered that a gene that participates in the regulation of the body's biological rhythms may also be a major control in regulating metabolism.

18 May 2007

What makes a simple biological clock tick?

An interdisciplinary team of researchers at Vanderbilt University has analyzed the simplest known biological clock and figured out what makes it tick.

3 Apr 2007

Actigraphy helps assess and manage sleep disorders

Actigraphy, the use of a portable device that records movement over extended periods of time, and has been used extensively in the study of sleep and circadian rhythms, provides an acceptably accurate estimate of sleep patterns in normal, healthy adult populations and in-patients suspected of certain sleep disorders, according to practice parameters published in the April 1st issue of the journal SLEEP.

2 Apr 2007

Jet lag could be a killer

Researchers in the U.S. have found that jet lag or rotating shift work shortens the lifespan in mice and they say it raises concerns for humans affected by time disruption.

7 Nov 2006

New genetic findings relating to the tau mutation

The first gene known to control the internal clock of humans and other mammals works much differently than previously believed, according to a study by Utah and Michigan researchers.

3 Jul 2006

Body has more than one body clock

Research conducted at Oregon Health & Science University suggests that contrary to popular belief, the body has more than one "body clock."

23 May 2006

Melatonin, taken orally can improve ability to sleep

Researchers from the Divisions of Sleep Medicine at Brigham and Women's Hospital and Harvard Medical School have found in a double-blind placebo-controlled clinical study, that melatonin, taken orally during non-typical sleep times, significantly improves an individual's ability to sleep.

3 May 2006

Prenatal exposure to alcohol can change child's circadian rhythms

Altered sleeping and eating patterns, behavioral problems, attention deficits and depression in children with fetal alcohol spectrum disorders may indicate that their biological rhythms, which are controlled by circadian systems, have been affected by alcohol exposure during development.

25 Apr 2006

No evidence that melatonin is effective in treating secondary sleep disorders

There is no evidence that melatonin is effective in treating secondary sleep disorders or preventing jet lag, finds a study published online by the British Medical Journal.

19 Feb 2006

Melatonin useless when it comes to sorting out sleep disorders

According to Canadian scientists there is no evidence to support the belief that melatonin has any effect in the treatment of sleep disorders.

12 Feb 2006

Bright light therapy may aid patients with depressive and bipolar disorders

A report in the November Cell Metabolism reveals powerful effects of light on the adrenal glands, a finding that might explain the broad benefits of bright light therapy for a variety of conditions, including sleep and depressive disorders, according to researchers.

14 Nov 2005

Simple, at-home treatment for jet lag

A simple, at-home treatment -- a single light box and the over-the-counter drug melatonin -- allows travelers to avoid jet lag by resetting their circadian body clock before crossing several time zones, according to new research being published in The Endocrine Society's Journal of Clinical Endocrinology and Metabolism.

3 Nov 2005

New understanding of jet lag

A new study demonstrates that the brain’s central timekeeper - the biological clock that regulates waking and sleeping cycles - has two parts that fall out of synchrony during light schedule shifts of six hours, the time it takes to fly across the Atlantic.

3 Jun 2005

Light therapy effectively treats mood disorders

A study commissioned by the American Psychiatric Association and led by a psychiatrist at the University of North Carolina at Chapel Hill School of Medicine has found that light therapy effectively treats mood disorders, including seasonal affective disorder (SAD) and other depressive disorders.

4 Apr 2005