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Travel Increases Risk Of Deep Vein Thrombosis, Study
A new study from the US suggests that travel is linked to a higher risk of developing a deep vein thrombosis (DVT), also known as a venous
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New Survey Shows Americans Strongly Support Guaranteed Dental Coverage In Healthcare Reform
Nearly 2 in 3 U.S. adults (63%) think that it is important that dental coverage is part of an overall health reform package, and 40 percent say it is very important, according to a new public opinion survey commissioned by Oral Health America. The survey, sponsored by the Dental Trade Alliance Foundation, and conducted by Harris Interactive(R), was released today at the launch of National Smile Month, the largest independent international campaign promoting good dental care including brushing, regular dental visits, and healthy food choices as well as the need for effective oral healthcare policies.
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New Cognitive Screening Test For Detecting Early Dementia
Researchers at Addenbrook"s Hospital in Cambridge published a study on bmj.com in which they explain their design and evaluation of a new cognitive test for detecting Alzeimer" disease called TYM ("test your memory") which is considered quicker and more precise than many existing tests, and which can also help diagnose early dementia.
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Hormone Levels Contribute To Stress Resilience

It is important to understand what biological mechanisms contribute to an individual"s capacity to be resilient under conditions of extreme stress, such as those regularly experienced by soldiers, police, and firefighters. Dr. Charles A. Morgan III and his colleagues from Yale University and the VA National Center for PTSD have worked closely with collaborators at the Special Forces Underwater Warfare Operations Center to study special operations soldiers enrolled in the military Combat Diver Qualification Course (CDQC). Dehydroepiandrosterone, or "DHEA" as it is commonly known, is a hormone that is secreted by the adrenal gland in response to stress. Although medical scientists have known for over a decade that DHEA provides beneficial, anti-stress effects in animals, they did not know until now whether this was also true for humans. The scientists completed psychological and hormone assessments on a group of soldiers the day before they began the month-long CDQC, and immediately after their final pass/fail exam - a highly stressful, nocturnal, underwater navigation exercise. They found that soldiers with more DHEA performed better during the final underwater navigation exam than those with less DHEA. These findings are being published by Elsevier in the August 15th issue of Biological Psychiatry. Underwater navigation is a task that relies on an area of the brain called the hippocampus that is very sensitive to the negative effects of stress. "Animal studies have shown that DHEA buffers against stress, in part, by modulating receptors in this region of the brain," explained Dr. Morgan. "These findings are important in understanding why and how soldiers may differ in their ability to tolerate stress and also raise the possibility that, in the future, compounds like DHEA might be used to protect military personnel from the negative impact of operational stress." Clearly, additional research is still needed but these findings are a step forward in the quest to help prevent or better treat the symptoms of stress-related disorders that these high-risk individuals experience. Notes: The article is "Relationships Among Plasma Dehydroepiandrosterone and Dehydroepiandrosterone Sulfate, Cortisol, Symptoms of Dissociation, and Objective Performance in Humans Exposed to Underwater Navigation Stress" by Charles A. Morgan III, Ann Rasmusson, Robert H. Pietrzak, Vladimir Coric, and Steven M. Southwick. Authors Morgan, Pietrzak, Coric, and Southwick are affiliated with the Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut. Morgan, Pietrzak, and Southwick are also with the National Center for PTSD, VA CT Healthcare System, West Haven, Connecticut. Rasmusson is from the Department of Psychiatry, Boston University, and the National Center for PTSD, VA Boston Healthcare System, in Boston, Massachusetts. The article appears in Biological Psychiatry, Volume 66, Issue 4 (August 15, 2009), published by Elsevier. Jayne Dawkins Elsevier


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