Neurons in the brain's master clock that adjust their activity in response to light have a key role in the resetting of an animal's daily cycle, finds a study of male and female mice published in JNeurosci. These cells may be responsible for circadian rhythm disruptions stemming from exposure to artificial light at night.
People who have their evening meal before 9 p.m. or wait at least two hours before going to sleep have lower risk of breast and prostate cancer.
Actigraphy can be a useful clinical tool for the evaluation of adult and pediatric patients with suspected sleep disorders, including circadian rhythm sleep-wake disorders, according to a clinical practice guideline from the American Academy of Sleep Medicine (AASM).
Biologists at Washington University in St Louis unlocked a cure for jet lag in mice by activating a small subset of the neurons involved in setting daily rhythms.
Researchers find that a key circadian clock controlling kinase, CK1D -- controlling the stability of PER2 -- has two forms, one that stabilizes PER2 and one that destabilizes it.
Living at higher latitudes, where there is also less sunlight, could result in a higher prevalence rate of obsessive compulsive disorder (OCD), according to new research from Binghamton University, State University of New York.
A new study conducted at Washington State University has brought scientists closer to finding out why working night shifts increases your risk of developing diabetes and other metabolic disorders. The study revealed that just three days of being on a night shift schedule will disrupt metabolism. This disruption appears to be driven by separate biological clocks (so-called peripheral oscillators) in the liver, gut and pancreas, rather than the brain's master clock.
A new study shows that a variation in the melatonin receptor 1A gene is linked to the risk of Alzheimer's disease in the elderly. The same research team has previously demonstrated that the same genetic variation reduces tolerance to shift work among the working age population.
Our mode of thinking changes at different times of the day and follows a 24-hour pattern, according to new findings published in PLOS ONE. University of Bristol researchers were able to study our thinking behavior by analyzing seven billion words used in 800 million tweets.
A study of 32,000 women found that those with an early chronotype, or sleep-wake preference, were significantly less likely to develop depression.