Circadian Rhythm is the regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, feeding, etc. This rhythm seems to be set by a 'biological clock' which seems to be set by recurring daylight and darkness.
Until recently, work on biological clocks that dictate daily fluctuations in most body functions, including core body temperature and alertness, focused on neurons, those electrically excitable cells that are the divas of the central nervous system.
According to a nutrition study led by the German Institute of Human Nutrition, a partner of the German Center for Diabetes Research, the so-called internal clock also influences how people with impaired glucose metabolism react to carbohydrate-rich food.
A new study suggests that the melatonin content of dietary supplements often varies widely from what is listed on the label.
Daylight savings time contributes to higher miscarriage rates among women undergoing in vitro fertilization who had had a prior pregnancy loss according to new research out of Boston Medical Center and IVF New England.
New sleep research has shown that by respecting nature and keeping days light and nights dark we can improve our sleep patterns.
Many firefighters suffer acute and chronic sleep deficiency and misalignment of their circadian rhythm (body clock) due to extended shifts and long work weeks.
A clump of just a few thousand brain cells, no bigger than a mustard seed, controls the daily ebb and flow of most bodily processes in mammals -- sleep/wake cycles, most notably.
A new study from the laboratory of Hiroki Ueda at the RIKEN Quantitative Biology Center investigates circadian timekeeping with a novel approach to creating genetic knock-out rescue mice.
Anyone who has drifted into a fuzzy-headed stupor after a large holiday meal is familiar with the condition commonly known as a "food coma."
Molecular clocks in cells throughout the body control many physiologic changes in a 24-hour day/night circadian rhythm -- among them the timing of sleep and wakefulness.
Particular eating behaviors may lower the risk of developing non-alcoholic fatty liver disease (NAFLD), according to research presented this week at The Liver Meeting — held by the American Association for the Study of Liver Diseases.
Some people adapt easily to shift work, but not everyone can handle constant disruptions to their daily rhythm. Finnish researchers have now found that a melatonin receptor gene influences tolerance to shift work.
An interdisciplinary team of researchers at the University of Georgia has developed a new technology that may help scientists better understand how an individual cell synchronizes its biological clock with other cells.
A newly released basic science study of Roux-en-Y gastric bypass (RYGB) suggests that a functioning circadian clock, or sleeping at night and being awake during the day, can help patients achieve a higher amount of weight loss following the surgery.
The brain's biological clock stimulates thirst in the hours before sleep, according to a study published in the journal Nature by McGill University researchers.
Despite an assessment in 2007 indicating that night shift work was probably carcinogenic, data from three new studies and from a review of currently available evidence, published in the Journal of the National Cancer Institute, indicate that night shift work has little or no effect on breast cancer incidence.
Individuals with alcohol dependence (AD) often have sleep-related disorders such as insomnia, circadian-rhythm sleep disorders, breathing-related sleep disorders, movement disorders, and parasomnias such as sleep-related eating disorder, sleepwalking, nightmares, sleep paralysis, and REM sleep behavior disorder.
Patients make more progress toward overcoming anxiety, fears and phobias when their therapy sessions are scheduled in the morning, new research suggests.
Ever wondered what happens inside your brain when you stay awake for a day, a night and another day, before you finally go to sleep? In a new study published today in the journal Science, a team of researchers from the University of Liege and the University of Surrey have scanned the brains of 33 participants across such a 2-day sleep deprivation period and following recovery sleep.
Bright light combined with caffeine can improve driving performance and alertness of chronically sleep deprived young drivers, according to a Queensland University of Technology road safety study.