News tagged with circadian rhythms
Body clocks of depressed people altered at cell level, researchers show
Every cell in our bodies runs on a 24-hour clock, tuned to the night-day, light-dark cycles that have ruled us since the dawn of humanity. The brain acts as timekeeper, keeping the cellular clock in sync ...
Medical research
May 13, 2013 |
4 / 5 (19) |
4
|
Researcher examines behavior of genes to understand breast cancer risks, other health issues
Most often, people associate circadian rhythms with the symptoms of jet lag that occur after crossing several time zones. Circadian rhythms, which get their cues from light and darkness, can change sleep-wake ...
Medical research
Apr 30, 2013 |
not rated yet |
0
Our internal clocks can become ticking time bombs for diabetes and obesity
If you're pulling and all-nighter to finish a term paper, a new parent up all night with a fussy baby, or simply can't sleep like you once could, then you may be snoozing on good health. That's because new research published ...
Medical research
Apr 01, 2013 |
5 / 5 (2) |
0
|
Cell death in retina helps tune our internal clocks
(Medical Xpress)—With every sunrise and sunset, our eyes make note of the light as it waxes and wanes, a process that is critical to aligning our circadian rhythms to match the solar day so we are alert during the day and ...
Neuroscience
Mar 05, 2013 |
5 / 5 (1) |
0
|
Weathering the winter blues
The holidays are over and there's a calendar full of cold, gray days ahead. Some of us experience the "winter blues" and others experience a more serious kind of depression like seasonal affective disorder (SAD). It can bring ...
Psychology & Psychiatry
Jan 24, 2013 |
4 / 5 (1) |
1
Circadian rhythms can be modified for potential treatment of disorders
(Medical Xpress)—UC Irvine-led studies have revealed the cellular mechanism by which circadian rhythms – also known as the body clock – modify energy metabolism and also have identified novel compounds that control ...
Cardiology
Jan 22, 2013 |
2 / 5 (2) |
0
|
Impaired melatonin secretion may play a role in premenstrual syndrome
A new study by Douglas Mental Health University Institute researchers shows altered body rhythms of the hormone melatonin in Premenstrual dysphoric disorder (PMDD) women with insomnia. This finding may help explain some of ...
Medical research
Dec 19, 2012 |
not rated yet |
0
More than 3,000 epigenetic switches control daily liver cycles
(Medical Xpress)—When it's dark, and we start to fall asleep, most of us think we're tired because our bodies need rest. Yet circadian rhythms affect our bodies not just on a global scale, but at the level ...
Genetics
Dec 11, 2012 |
4.8 / 5 (5) |
0
|
Researchers examine the neuroscience of mental fatigue
We all perhaps know the feeling of mental exhaustion, but what does it mean physiologically to have mental fatigue? A new study carried out using brain scans could help scientists uncover the neurobiological mechanisms underlying ...
Neuroscience
Dec 10, 2012 |
not rated yet |
0
Re-Timer ready to reset sleep
(Medical Xpress)—Today saw the launch of Re-Timer, a wearable green light device invented by Flinders University sleep researchers to reset the body's internal clock.
Psychology & Psychiatry
Nov 21, 2012 |
5 / 5 (4) |
4
|
Researchers find that listening abilities depend on rhythms in the brain
(Medical Xpress)—Naturally, our brain activity waxes and wanes. When listening, this "oscillation" synchronizes to the sounds we are hearing. Researchers at the Max Planck Institute have found that this ...
Neuroscience
Nov 14, 2012 |
5 / 5 (4) |
7
|
Probing sleep's drowsy mystery: Researchers stay up nights trying to understand rhythms, effects
It is one of the ironies of sleep research that scientists stay up all night to do it.
Health
Nov 05, 2012 |
not rated yet |
0
New paper examines shifting gears in the circadian clock of the heart
A new study conducted by a team of scientists led by Giles Duffield, assistant professor of biological sciences and a member of the Eck Institute for Global Health at the University of Notre Dame focuses on the circadian ...
Cardiology
Oct 23, 2012 |
3 / 5 (1) |
0
|
Living against the clock: Does loss of daily rhythms cause obesity?
When Thomas Edison tested the first light bulb in 1879, he could never have imagined that his invention could one day contribute to a global obesity epidemic. Electric light allows us to work, rest and play at all hours of ...
Medical research
Aug 29, 2012 |
not rated yet |
0
Zebrafish study explains why the circadian rhythm affects your health
Disruptions to the circadian rhythm can affect the growth of blood vessels in the body, thus causing illnesses such as diabetes, obesity, and cancer, according to a new study from Linköping University and ...
Medical research
Aug 28, 2012 |
3 / 5 (2) |
0
Circadian rhythm
A circadian rhythm is a roughly-24-hour cycle in the biochemical, physiological or behavioral processes of living entities, including plants, animals, fungi and cyanobacteria (see bacterial circadian rhythms). The term "circadian", coined by Franz Halberg, comes from the Latin circa, "around," and diem or dies, "day", meaning literally "approximately one day." The formal study of biological temporal rhythms such as daily, tidal, weekly, seasonal, and annual rhythms, is called chronobiology.
Circadian rhythms are endogenously generated, and can be entrained by external cues, called Zeitgebers, the primary one of which is daylight. These rhythms allow organisms to anticipate and prepare for precise and regular environmental changes.
For more information about Circadian rhythm, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
