http://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Scientists have shed new light on how older people may lose their memory with a development that could aid research into treatments for age-related memory disorders. http://phys.org/news221301879.html Medicine & Health Wed, 06 Apr 2011 09:45:01 EST news221301879 All those salty snacks available at the local tavern might be doing more than increasing your thirst: They could also play a role in suppressing social anxiety. http://phys.org/news221244963.html Medicine & Health Tue, 05 Apr 2011 17:56:26 EST news221244963 The hippocampus, a brain region implicated in memory and interpreting environmental contexts, has been the focus of a controversy in posttraumatic stress disorder (PTSD). http://phys.org/news220006084.html Medicine & Health Tue, 22 Mar 2011 09:48:28 EST news220006084 (PhysOrg.com) -- Scientists from the U.S. Department of Energy's (DOE) Brookhaven National Laboratory, Stony Brook University, and collaborators have demonstrated the efficacy of a "wearable," portable PET scanner they've developed for rats. The device will give neuroscientists a new tool for simultaneously studying brain function and behavior in fully awake, moving animals. http://phys.org/news219243918.html Medicine & Health Sun, 13 Mar 2011 14:05:35 EST news219243918 It has been long known that stress plays a part not just in the graying of hair but in hair loss as well. Over the years, numerous hair-restoration remedies have emerged, ranging from hucksters' "miracle solvents" to legitimate medications such as minoxidil. But even the best of these have shown limited effectiveness. http://phys.org/news217098367.html Medicine & Health Wed, 16 Feb 2011 17:06:25 EST news217098367 Cortisol, the so-called stress hormone, seems to behave in contradictory ways in children. Some youngsters with behavioral problems have abnormally high levels of cortisol, while others with identical problems have abnormally low levels. What's going on? http://phys.org/news216475862.html Medicine & Health Wed, 09 Feb 2011 12:12:39 EST news216475862 Young adults who are lesbian, gay or bisexual (LGB) are at far higher risk for severe mental health problems than their heterosexual peers. New research from Concordia University suggests that the stress of being rejected or victimized because of sexual orientation may disrupt hormonal responses in lesbians, gays and bisexuals. http://phys.org/news215872190.html Medicine & Health Wed, 02 Feb 2011 12:50:01 EST news215872190 (PhysOrg.com) -- A small clinical trial in The Netherlands suggests bright light therapy may be a useful treatment for the symptoms of major depression in older adults. http://phys.org/news213600134.html Medicine & Health Fri, 07 Jan 2011 07:50:01 EST news213600134 The cocktail of hormones cascading through depressed mothers' bodies may play an important role in the development of their unborn children's brains. http://phys.org/news211110944.html Medicine & Health Thu, 09 Dec 2010 10:20:03 EST news211110944 Binge-drinking teenagers may be putting themselves at higher risk in adulthood for mood disorders such as anxiety and depression, Loyola University Health System researchers report. http://phys.org/news209059018.html Medicine & Health Mon, 15 Nov 2010 16:10:01 EST news209059018 Stress may be more hazardous to our mental health than previously believed, according to new research from Concordia University. A series of studies from the institution have found there may be a link between the recent rise in depression rates and the increase of daily stress. http://phys.org/news208010906.html Medicine & Health Wed, 03 Nov 2010 14:00:02 EST news208010906 Daily sleeping and eating patterns are critical to human well-being and health. Now, a new study from Concordia University has demonstrated how the brain chemical dopamine regulates these cycles by altering the activity of the "clock-protein" PER2. Published in the Journal of Neuroscience, these findings may have implications for individuals with Parkinson's Disease with disrupted 24-hour rhythms of activity and sleep. http://phys.org/news206791702.html Medicine & Health Wed, 20 Oct 2010 11:20:01 EST news206791702 Surgical patients with known heart disease risks who are given beta blockers around the time of surgery have a significantly reduced risk of post-operative death compared with patients not given beta blockers, according to a study by researchers at the San Francisco VA Medical Center. http://phys.org/news204973272.html Medicine & Health Wed, 29 Sep 2010 10:01:26 EST news204973272 High levels of the stress hormone cortisol play a critical role in blocking testosterone's influence on competition and domination, according to new psychology research at The University of Texas at Austin. http://phys.org/news204970259.html Medicine & Health Wed, 29 Sep 2010 09:11:17 EST news204970259 Scientists at the University of Liverpool have found that high levels of a stress hormone in recovering alcoholics could increase the risk of relapse. http://phys.org/news204458355.html Medicine & Health Thu, 23 Sep 2010 10:59:36 EST news204458355 High levels of the stress hormone cortisol strongly predict cardiovascular death among both persons with and without pre-existing cardiovascular disease according to a new study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM). http://phys.org/news203233323.html Medicine & Health Thu, 09 Sep 2010 06:42:19 EST news203233323 Alcohol consumption, withdrawal, and abstinence can all raise stress hormones in humans and animals. A review has described how stress hormones called glucocorticoids are associated with neurotoxicity during abstinence after withdrawal from alcohol dependence.Glucocorticoid receptor antagonism may therefore represent a pharmacological option for recovery. http://phys.org/news203096725.html Medicine & Health Tue, 07 Sep 2010 17:10:03 EST news203096725 Researchers at The University of Western Ontario have provided the first direct evidence using a biological marker, to show chronic stress plays an important role in heart attacks. Stressors such as job, marital and financial problems have been linked to the increased risk for developing cardiovascular disease including heart attack. But there hasn't been a biological marker to measure chronic stress. Drs. Gideon Koren and Stan Van Uum developed a method to measure cortisol levels in hair providing an accurate assessment of stress levels in the months prior to an acute event such as a heart attack. The research is published on-line in the journal Stress. http://phys.org/news202708290.html Medicine & Health Fri, 03 Sep 2010 05:20:01 EST news202708290 A collaborative team of scientists led by researchers at The Medical College of Wisconsin, in Milwaukee, has used the tools of structural biology to understand how a synthetic chemical mimics abscisic acid (ABA), a key stress hormone that helps plants cope with adverse environmental conditions such as drought. The results are published online in Nature Structural & Molecular Biology in advance of print publication later. http://phys.org/news201970895.html Biology Wed, 25 Aug 2010 16:01:47 EST news201970895 (PhysOrg.com) -- A new study led by a University of Toronto Scarborough psychologist shows that human infants can remember unusual emotional events. http://phys.org/news201964561.html Medicine & Health Wed, 25 Aug 2010 14:16:13 EST news201964561 New research shows that when some fence lizards are attacked by fire ants they "stress out"-- a response that actually helps the species to survive by heightening the animal's awareness of imminent danger. Tracy Langkilde, assistant professor of biology at Penn State University, found that lizards living in areas of the southeastern United States, where large numbers of fire ants also live, have elevated levels of stress hormones, called glucocorticoids. http://phys.org/news199985352.html Biology Mon, 02 Aug 2010 16:29:36 EST news199985352 People suffering from diabetes-related foot ulcers show different rates of healing according to the way they cope and their psychological state of mind, according to new research by a health psychologist at The University of Nottingham. http://phys.org/news199963183.html Medicine & Health Mon, 02 Aug 2010 10:20:00 EST news199963183 "Many people," says Dr. Eeva Karjalainen, of the Finnish Forest Research Institute, Metla, "feel relaxed and good when they are out in nature. But not many of us know that there is also scientific evidence about the healing effects of nature." http://phys.org/news199121152.html Medicine & Health Fri, 23 Jul 2010 16:26:12 EST news199121152 Cancer surgery wreaks havoc on a body's immune system and stress hormones exacerbate the problem. As a result, about half of those who undergo surgery for tumor removal experience a recurrence of cancer in the same region or other parts of the body. http://phys.org/news198944525.html Medicine & Health Wed, 21 Jul 2010 15:22:20 EST news198944525 Michigan State University researchers are the first to identify a stress hormone in the sea lamprey, using the 500 million-year-old species as a model to understand the evolution of the endocrine system. http://phys.org/news198776424.html Biology Mon, 19 Jul 2010 16:41:05 EST news198776424 In a new Biological Psychiatry article, Dr. Regina Sullivan and colleagues have dissected the behavior of mother rats and their infant pups, modeling nurturing by stroking and abuse with electric shock. In this animal model of infant abuse, they took into consideration the unique infant neurobehavioral learning attachment system that ensures infant rats' attachment to their caregiver regardless of the quality of care received. http://phys.org/news196347382.html Medicine & Health Mon, 21 Jun 2010 14:10:01 EST news196347382 There may be a biological reason why depression and other stress-related psychiatric disorders are more common among women compared to men. Studying stress signaling systems in animal brains, neuroscience researchers found that females are more sensitive to low levels of an important stress hormone and less able to adapt to high levels than males. http://phys.org/news195820421.html Medicine & Health Tue, 15 Jun 2010 11:34:12 EST news195820421 When we get angry, the heart rate, arterial tension and testosterone production increases, cortisol (the stress hormone) decreases, and the left hemisphere of the brain becomes more stimulated. This is indicated by a new investigation lead by scientists from the University of Valencia (UV) that analyses the changes in the brain's cardiovascular, hormonal and asymmetric activation response when we get angry. http://phys.org/news194528309.html Medicine & Health Mon, 31 May 2010 12:39:06 EST news194528309 A new study on preschoolers attending full-day child care in licensed day care homes has found increases in cortisol, a stress hormone, when the children are in child care that exceeds their levels at home. The increases were larger in day care homes where providers were intrusive or overcontrolling. http://phys.org/news193036049.html Medicine & Health Fri, 14 May 2010 06:40:01 EST news193036049 If you were a mouse, a mere whiff of a cat, rat or snake would be enough to send you into a fearful state. Your stress hormone levels would go up and you'd begin to take extra precautions, hugging the ground as you carefully investigated your surroundings. http://phys.org/news192976674.html Biology Thu, 13 May 2010 13:40:19 EST news192976674