ScienceDaily: Stress News
Hippocampal volume loss in depression reflects glial loss
Depression has been associated with reduced volume of the hippocampus in magnetic resonance imaging studies in humans. A new study now clarifies the cellular basis of these volumetric changes, which have been unclear until now. Beginning in the 1980s, a series of studies in rodents suggested that an area of the hippocampus, a brain region implicated in mood and memory, was particularly vulnerable to stress. When analyzing the brain tissue in detail, they reported loss of nerve cells called neurons with stress.
Conflict zone contractors suffer high rates of PTSD, depression
Private contractors who worked in Iraq, Afghanistan or other conflict environments over the past two years report suffering from post-traumatic stress disorder and depression more often than military personnel who served in recent conflicts, according to a new study. Researchers found that among the contractors studied, 25 percent met criteria for PTSD, 18 percent screened positive for depression and half reported alcohol misuse. Relatively few get help either before or after deployment.
Researchers test biofeedback device in lowering grandmothers’ stress
In a pilot study, 20 grandmothers were able to lower their stress levels with a biofeedback device that tracks breathing patterns.