ScienceDaily Health Headlines -- for Thursday, September 4, 2008

Researchers Create Animal Model Of Chronic Stress (September 4, 2008) -- In an effort to better understand how chronic stress affects the human body, researchers have created an animal model that shows how chronic stress affects behavior, physiology and reproduction. Developing the animal model better positions the researchers to understand the neurohormonal causes of such stress and the body reaction in order to develop more effective treatment options for humans. ... > full story

Children Of Older Fathers More Likely To Have Bipolar Disorder, New Report Finds (September 4, 2008) -- Older age among fathers may be associated with an increased risk for bipolar disorder in their offspring, according to a new report. ... > full story

Is There Hope For The Prevention Of Dementia? (September 4, 2008) -- Scientists reviewed the latest findings about the effect of antihypertensive treatment on cognitive function and dementia at a recent conference. As a risk factor for stroke, ischemic brain lesions and silent brain infarcts, general atherosclerosis, myocardial infarction and cardiovascular morbidity, hypertension may also be a risk factor for dementia related to cerebrovascular disease. ... > full story

Multitasking Can Be Efficient At Certain Optimal Times (September 4, 2008) -- In today's fast-paced world, multitasking has become an increasingly necessary part of our daily routine. Unfortunately, multitasking also is notoriously inefficient. However, a new brain imaging study led by a cognitive neuroscientist finds that there are optimal times when we are better suited to multitask. ... > full story

Early Onset Gene For Inflammatory Bowel Diseases Identified (September 4, 2008) -- Two new genetic markers that influence the likelihood of getting Crohn's disease or ulcerative colitis during childhood have been identified. One marker sits next to a gene that regulates inflammatory responses, suggesting a target for therapy. ... > full story

How Often Do Hip And Knee Replacements Need Revision? (September 4, 2008) -- A comprehensive study using nationwide data on hip and knee replacements in England has found that one in 75 patients require a revision of their joint replacement after three years. Although this compares favorably with the rest of the world, the study reinforces concerns about the new surgical techniques of hip resurfacing and unicondylar knee replacement. ... > full story

Post-marketing Studies Finding Adverse Events In Drugs Used In Children (September 4, 2008) -- The Food and Drug Administration Modernization Act, designed to stimulate more drug safety studies in children, has resulted in more than 130 label changes since its inception nearly six years ago, according to researchers. ... > full story

Substance Found In Fruits And Vegetables Reduces Likelihood Of The Flu (September 3, 2008) -- Mice given quercetin, a naturally occurring substance found in fruits and vegetables, were less likely to contract the flu. The study also found that stressful exercise increased the susceptibility of mice to the flu, but quercetin canceled out that negative effect. Quercetin, a close chemical relative of resveratrol, is present in a variety of fruits and vegetables, including red onions, grapes, blueberries, tea, broccoli and red wine. ... > full story

New Discovery About Growth Factor Can Be Breakthrough For Cancer Research (September 3, 2008) -- A research team has discovered an entirely new signal path for a growth factor that is of crucial importance for the survival and growth of cancer cells. This discovery, published in Nature Cell Biology, opens up an entirely new landscape for research on breast and prostate cancer, among other types. ... > full story

Nearly Half Of US Adults Will Develop Painful Knee Osteoarthritis By Age 85: Study (September 3, 2008) -- Almost half of all US adults and nearly two-thirds of obese adults will develop painful osteoarthritis of the knee by age 85, a new study suggests. ... > full story

Remote Satellite Imaging Predicts Outbreaks Of Infectious Disease (September 3, 2008) -- Scientists in the USA have established a way to predict outbreaks of cholera, making it easier to control. This finding could provide a model to predict and potentially control outbreaks of other important infectious diseases. ... > full story

Teen Suicide Spike Was No Fluke (September 3, 2008) -- After 10 years of steady decline, researchers say a recent spike in the teen suicide rate is not a fluke and new prevention strategies need to be developed. The teen suicide rate jumped 18 percent from 2003-2004. That's the largest one year change in 15 years. Now, the most recent stats available (2004-2005) show the numbers are still significantly higher, and experts are concerned this could be a new trend. ... > full story

Deep Brain Stimulation Halts Cell Loss, Parkinson's Researchers Find (September 3, 2008) -- Deep brain stimulation, a surgical technique often viewed as a last resort for people with Parkinson's disease, halts the progression of dopamine-cell loss in animal models, according to preliminary research. ... > full story

Too Much Calcium In Blood May Increase Risk Of Fatal Prostate Cancer (September 3, 2008) -- Men who have too much calcium in their bloodstreams may have an increased risk of fatal prostate cancer, according to a new analysis. ... > full story

Playing, And Even Watching, Sports Improves Brain Function (September 3, 2008) -- Being an athlete or merely a fan improves language skills when it comes to discussing their sport because parts of the brain usually involved in playing sports are instead used to understand sport language, new research shows. ... > full story

Drug Reduces Vomiting, Hospital Admissions In Children With Gastroenteritis, Study Finds (September 3, 2008) -- Researchers have demonstrated that a drug called ondansetron helps reduce vomiting, the need for intravenous fluids and hospital admissions in children with acute gastroenteritis. ... > full story

Virus Weaves Itself Into The DNA Transferred From Parents To Babies (September 3, 2008) -- New research shows that some parents pass on the human herpes virus 6 (HHV-6) to their children because it is integrated into their chromosomes. This is the first time a virus has been shown to become part of the human DNA and then get passed to subsequent generations. ... > full story

Collective Traumas: Early Explanations Of 9/11 Linked To Long-term Adjustment (September 3, 2008) -- A new study, lead authored by Kent State University's John Updegraff, suggests that finding meaning in the immediate aftermath of the 9/11 terroist attacks was an important coping response that helped many Americans adjust by reducing their fears of future terrorism. ... > full story

Cell Division Study Resolves 50-year-old Debate, May Aid Cancer Research (September 3, 2008) -- A new study has finally resolved a controversy that cellular biologists have been arguing over for nearly 50 years, with findings that may aid research on everything from birth defects and genetic diseases to the most classic "cell division" issue of them all -- cancer. ... > full story

Tall Men At Increased Risk Of Prostate Cancer Development And Progression (September 3, 2008) -- A man's height is a modest marker for risk of prostate cancer development, but is more strongly linked to progression of the cancer, say researchers who conducted their own study on the connection and also reviewed 58 published studies. ... > full story

Hurricane Katrina Increased Mental And Physical Health Problems In New Orleans By Up To Three Times (September 3, 2008) -- Half the residents of New Orleans were suffering from poor mental and physical health more than a year after their homes and community were devastated by Hurricane Katrina in August 2005, according to new research. ... > full story

Low Birth Weight Children Appear At Higher Risk Of Psychiatric Disturbances (September 3, 2008) -- Low-birth-weight children appear to be at higher risk for psychiatric disturbances from childhood through high school than normal-birth-weight children, according to a new report. In addition, low-birth-weight children from urban communities may be more likely to have attention problems than suburban low-birth-weight children. ... > full story

Battling Diabetes With Beta Cells (September 3, 2008) -- Scientists have replicated insulin-producing cells, providing new hope for diabetics. A new cure -- based on advances in cell therapy -- may be within reach. ... > full story

First Direct Proof Of How Osteoarthritis Destroys Cartilage (September 3, 2008) -- A team of orthopaedic researchers has found definitive, genetic proof of how the most common form of arthritis destroys joint cartilage in nearly 21 million aging Americans, according to a study in the Journal of Bone and Mineral Research. The findings serve as an important foundation for the design of new treatments for osteoarthritis, researchers said. ... > full story

Directing A Driver's Gaze Results In Smoother Steering (September 3, 2008) -- A study recently published in ARVO's online Journal of Vision may inform the next generation of in-car driving assistance systems. New research finds that when drivers fix their gaze on specific targets placed strategically along a curve, their steering is smoother and more stable than it is in normal conditions. ... > full story

Zen Training Speeds The Mind's Return After Distraction, Brain Scans Reveal (September 3, 2008) -- After being interrupted by a word-recognition task, experienced meditators' brains returned faster to their pre-interruption condition. Researchers used functional magnetic resonance imaging to examine changes in blood flow in the brain when people meditating were interrupted by stimuli designed to mimic the appearance of spontaneous thoughts. ... > full story

New Hope For Treating Common Form Of Inherited Neuromuscular Disease (September 3, 2008) -- Treatments that ramp up production of the tiny "motors" that power cells may have promise for treating one of the most common forms of inherited neuromuscular disease, according to a new report. ... > full story

How Gastric Bypass Rapidly Reverses Diabetes Symptoms (September 3, 2008) -- A report offers new evidence to explain why those who undergo gastric bypass surgery often show greater control of their diabetes symptoms within days. ... > full story

How Friendly Bacteria Avoids Immune Attack To Live Happily In The Gut (September 3, 2008) -- For a long time scientists have been puzzled by the fact that the immune system in the gut is capable of fighting toxic bacterial infection while staying, at the same time, tolerant to its resident "friendly" bacteria. But a new article has starting to explain the mystery by revealing how a recently discovered gene - pims – is activated by the gut immune response against friendly bacteria to rapidly suppress it, effectively creating tolerance to the gut microbiota. ... > full story

Value Of Direct-to-consumer Drug Advertising Oversold, Study Finds (September 3, 2008) -- In the first-ever controlled study measuring the effectiveness of pharmaceutical direct-to-consumer advertising, researchers found only a modest effect on drug sales. In some cases, DTCA had no effect at all. ... > full story

New Endometrial Cancer Treatment Stops Growth Of Tumors And Kills Cancer Cells, Study Shows (September 3, 2008) -- A new approach to treating endometrial cancer patients not only stops the growth of tumors, but also kills the cancer cells. In a potentially major breakthrough, scientists discovered that introducing a particular inhibitor drug can turn "off'' receptors responsible for the growth of tumors in a significant number of patients with endometrial cancer. ... > full story

How First Autism Disease Genes Were Discovered (September 3, 2008) -- Scientists have presented the compelling neurobiological story of discovering the first autism genes. The role of gene mutations, their association with synapse abnormalities, and -- surprisingly -- a connection between circadian rhythms and autism risk was discussed at a recent conference. ... > full story

Why Strawberry Jam Is More Regulated Than Cigarettes (September 3, 2008) -- While jams and other consumer products are strictly regulated and are required to pass stringent tests before they can be sold, tobacco has no restrictions and manufacturers can, and do, add anything they want into the product. ... > full story

Babies' Rapid Weight Gain Linked To Higher Blood Pressure As Adults (September 3, 2008) -- Babies who gain weight rapidly within five months of birth and from about ages 2 to 5 years have higher systolic blood pressure in young adulthood. Babies that are lighter at birth have higher systolic blood pressure as adults. Immediate weight gain after birth is associated with higher diastolic blood pressure as adults. ... > full story

Brain Imaging Links Chronic Insomnia To Reversible Cognitive Deficits Without Changes In Behavior (September 3, 2008) -- A neuroimaging study has found that cognitive processes related to verbal fluency are compromised in people with insomnia despite the absence of a behavioral deficit. These specific brain function alterations can be reversed, however, through non-pharmacological treatment with sleep therapy. ... > full story

Risks And Benefits Of Antipsychotics In Children And Adolescents (September 3, 2008) -- New research illuminates the benefits and risks of antipsychotic medication in children and its impact on individual well-being, social, educational and/or vocational functioning, and disease burden. Scientists have pointed out the challenges that clinicians encounter in treating children and adolescents with psychiatric disorders, and discuss the requirements for starting antipsychotic treatment in clinical practice. ... > full story

Gene 'Network' Linked To Schizophrenia Pieced Together; Patients Confirmed To Carry Mutations (September 3, 2008) -- Researchers have uncovered for the first time molecular circuitry associated with schizophrenia that links three previously known, yet unrelated proteins. ... > full story

Periodic Limb Movement During Sleep Is Less Common In African-Americans; Associated With Insomnia (September 3, 2008) -- A study in the Sept. 1 issue of the journal Sleep is the first to objectively determine the prevalence of periodic limb movements during sleep in a population-based sample, finding a lower prevalence of PLMS in African-Americans and a higher rate of insomnia complaints in people with PLMS. ... > full story

Bowling Alone Because The Team Got Downsized (September 3, 2008) -- The pain of downsizing extends far beyond laid off workers and the people who depend on their paychecks, according to a new study. ... > full story

Vaginal Proteins In HIV-resistant Prostitutes Suggest New Prevention Measures (September 2, 2008) -- Researchers in Canada report discovery of unusual proteins in a small group of Kenyan sex workers that appear to be associated with resistance to infection with HIV, the virus that causes AIDS. ... > full story

Heavy Snoring Is An Independent Risk Factor For Carotid Atherosclerosis (September 2, 2008) -- Objectively measured heavy snoring is an independent risk factor for early carotid atherosclerosis, which may progress to be associated with stroke. The prevalence of carotid atherosclerosis, a leading cause of stroke, increases significantly with the severity of snoring. ... > full story

Neurogenesis In Adult Brain: Association With Stress And Depression (September 2, 2008) -- Scientist have presented the latest findings on how brain cells can be adversely affected by stress and depression. They have explained how the adult brain is generating new cells. These findings will impact the development of novel antidepressant drugs. ... > full story

Person's Geographic Origins Located From DNA (September 2, 2008) -- One day soon, you may be able to pinpoint the geographic origins of your ancestors based on analysis of your DNA. New research uses DNA to predict the geographic origins of individuals from a sample of Europeans, often within a few hundred kilometers of where they were born. ... > full story

New Sensory Devices To Aid Parkinson's And Stroke Patients Under Development (September 2, 2008) -- People who have suffered a stroke or who have been diagnosed with Parkinson's disease, could benefit from new research. ... > full story

All Types Of Antipsychotic Drugs Increase The Risk Of Stroke, Study Finds (September 2, 2008) -- All drugs used to treat psychosis are linked to an increased risk of stroke, and dementia sufferers are at double the risk, according to a study published on bmj.com today. ... > full story

More Daytime Sleeping Predicts Less Recovery During Rehabilitation For Older Adults (September 2, 2008) -- Daytime sleeping during a rehabilitation stay predicts less functional recovery for older adults, with effects lasting as long as three months. ... > full story

Infidelity Gene? Genetic Link To Relationship Difficulties Found (September 2, 2008) -- Scientists have found a link between a specific gene and the way men bond to their partners. The results offer a better understanding of such problems as autism and social phobia. ... > full story

B-vitamin Deficiency May Cause Vascular Cognitive Impairment (September 2, 2008) -- A B-vitamin-deficient diet caused cognitive impairment and cerebral vascular changes without evidence of neurodegeneration in mice. These findings provide new insight into the mechanisms that may underlie human age-related cognitive decline. ... > full story


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