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Sleep Deprivation And DementiaA study published in Science has found that levels of amyloid beta, a protein fragment associated with Alzheimers disease, rose and fell in association with sleep and wakefulness in mice. 'It is interesting that there may be a link between sleep and the build up of the protein associated with the development of Alzheimer's disease.
SleepwalkingTitle: SleepwalkingCategory: Diseases and ConditionsCreated: 9/28/2004Last Editorial Review: 8/4/2009
Eating At The Wrong Time Could Be Fueling The Obesity EpidemicEat less, exercise more. Now there is new evidence to support adding another "must" to the weight-loss mantra: eat at the right time of day. A Northwestern University study has found that eating at irregular times -- the equivalent of the middle of the night for humans, when the body wants to sleep -- influences weight gain. The regulation of energy by the body's circadian rhythms may play a significant role.
WUSTL Research Finds Individual Cells Isolated From The Biological Clock Can Keep Daily Time, But Are UnreliableAlexis Webb enters a small room at Washington University in St. Louis with walls, floor and ceiling painted dark green, shuts the door, turns off the lights and bends over a microscope in a black box draped with black cloth. Through the microscope, she can see a single nerve cell on a glass cover slip glowing dimly. The glow tells her the isolated nerve cell is busy keeping time. Webb, a graduate fellow in the Neuroscience Ph.D. Program, working with Erik Herzog, Ph.D.
Both Distress And Fatigue Impact Resident Physician ErrorsMayo Clinic researchers report that distress and fatigue among medical residents are independent contributors to self-perceived medical errors. The findings appear in the Journal of the American Medical Association (JAMA). "We looked at distress and fatigue together and found that both factors can lead to a significant risk of medical error," says Colin West, M.D., Ph.D., Mayo Clinic physician and lead author of the study.
Study Helps Understand How Alcohol Consumption Disrupts Circadian Rhythm In HumansChronic alcohol consumption blunts the biological clock's ability to synchronize daily activities to light, disrupts natural activity patterns and continues to affect the body's clock (circadian rhythm), even days after the drinking ends, according to a new study with hamsters. The study describes the changes that drinking can produce on the body's master clock and how it affects behavior.
Insomnia Is Bad For The HeartCan't sleep at night? A new study published in the journal Sleep has found that people who suffer from insomnia have heightened night-time blood pressure, which can lead to cardiac problems. The investigation, which measured the 24-hour blood pressure of insomniacs compared to sound sleepers, was conducted by researchers from the Université de Montréal, its affiliated Hôpital du Sacré-Cour de Montréal Sleep Disorders Centre and the Université Laval.
Insomniac Mice Created With Gene Variation That Lets People Get By On Less SleepA University of Utah sleep expert has joined with researchers at the University of California, San Francisco (UCSF), and Stanford University to identify a genetic variation in humans, which the scientists also developed in mouse models, that allows a rare number of people to require less sleep than others. Published in the Aug.