Tuesday, April 7, 2020

The Longer You’re Awake, The Slower You Get

Anyone that has ever had trouble sleeping can attest to the difficulties at work the following day. Experts recommend eight hours of sleep per night for ideal health and productivity, but what if five to six hours of sleep is your norm? Is your work still negatively affected? A team of researchers at Brigham and Women's Hospital (BWH) have discovered that regardless of how tired you perceive yourself to be, that lack of sleep can influence the way you perform certain tasks.

Sleep Apnea May Increase Insulin Resistance

Sleep apnea may cause metabolic changes that increase insulin resistance, according to researchers from the University of Pittsburgh Medical Center. The intermittent hypoxia associated with sleep apnea causes a...

New Evidence Of Age-Related Decline In The Brain’s Master Circadian Clock

A new study of the brain's master circadian clock -- known as the suprachiasmatic nucleus, or SCN -- reveals that a key pattern of rhythmic neural activity begins to decline by middle age. The study, whose senior author is UCLA Chancellor Gene Block, may have implications for the large number of older people who have difficulty sleeping and adjusting to time changes.

Middle-Aged Men: Could Dwindling Testosterone Levels Decrease Sleep?

At 30 years old, male testosterone levels drop by one to two percent annually. By age 40, men's quality of sleep begins to diminish. Could there be a link between decreased testosterone and reduced sleep?

Changes In Sleep Architecture Increase Hunger, Eating

A new study shows that both length of time and percentage of overall sleep spent in different sleep stages are associated with decreased metabolic rate, increased hunger, and increased intake of calories (specifically from fat and carbohydrates). The findings suggest an explanation for the association between sleep problems and obesity.

More Adults Report Excessive Sleepiness In The US Than In Europe

Excessive sleepiness is more common in the U.S. than in Europe, which raises concerns for public health and safety, according to a research abstract presented June 8, 2010, in San Antonio, Texas, at SLEEP 2010, the 24th annual meeting of the Associated Professional Sleep Societies LLC.

Sleep Deprivation Impairs cAMP Signalling In The Hippocampus.

Sleep deprivation impairs cAMP signalling in the hippocampus. Millions of people regularly obtain insufficient sleep. Given the effect of sleep deprivation on our lives, understanding the cellular and molecular pathways affected by sleep deprivation is clearly of social and clinical importance. One of the major effects of sleep deprivation on the brain is to produce memory deficits in learning models that are dependent on the hippocampus. Here we have identified a molecular mechanism by which brief sleep deprivation alters hippocampal...

Short Sleepers At Higher Risk Of Type 2 Diabetes And Heart...

People who sleep less than six hours a night may be three times more likely to develop a condition which leads to diabetes and heart disease, according to researchers at the University of Warwick.

Brain’s Energy Restored During Sleep, Suggests Animal Study

In the initial stages of sleep, energy levels increase dramatically in brain regions found to be active during waking hours, according to new research in the June 30 issue of the Journal of Neuroscience. These results suggest that a surge of cellular energy may replenish brain processes needed to function normally while awake.

A Good Night’s Slumber Won’t Reverse Chronic Sleep Loss

Deficits in functioning persist for those who frequently get too little shut-eye, study finds. Chronic sleep deprivation and the impact "sleep debt" has on functioning and thinking cannot be reversed by one good night's sleep, new research suggests. While a night of good sleep can make you feel and operate better in...

Light At Night Linked To Symptoms Of Depression In Mice

Too much light at night can lead to symptoms of depression, according to a new study in mice. Researchers found that mice housed in a lighted room 24 hours a day exhibited more depressive symptoms than did similar mice that had a normal light-dark cycle. However, mice that lived in constant light, but could escape into a dark, opaque tube when ...

A Cure For Jet Lag? Scientists Identify Brain Cell Which Keeps...

The discovery of the brain cell which determines our sleep patterns could pave the way for the introduction of a pill to beat jetlag. A pill that cures jet lag is a step closer today, after scientists discovered how signals from the brain control our biological clocks. Tests on mice suggested the human body clock - controlled by a region of the brain called the suprachiasmatic nuclei...