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Science News for September 10, 2009


Groups are key to good health

Research by the Universities of Exeter and Queensland shows that membership of social groups has a positive impact on health and well-being. Studies have found that people who maintain valued group memberships recover more positively after a stroke, are happier in care homes, and experience improved mental health.

Oil and wildlife don't mix in Ecuador's Eden

A study by WCS field scientists found that a single road in the park can change how indigenous communities use their resources, leading to commercial hunting and wildlife depletion. The researchers recorded over 11,000 kilograms of wild meat moving through markets between 2005-2007, with prices increasing by up to 60%.

SourceWildlife Conservation Society·JournalAnimal Conservation·DateSep 10, 2009

Engineered pea seeds protect against parasites

Researchers have developed genetically modified pea seeds that produce antibodies against coccidiosis, reducing treatment costs and making it easier to use in commercial settings. The study found that chickens fed these antibody-containing pea seeds were significantly less likely to contract the disease.

SourceBMC (BioMed Central)·JournalBMC Biotechnology·DateSep 10, 2009

Ketamine reduces suicidality in depressed patients

In a preliminary study, intravenous ketamine was found to acutely reduce suicidal thoughts in treatment-resistant depression patients. The reduction in suicidality was maintained when patients received repeated doses over two weeks, suggesting potential as an attractive treatment option for high-risk suicidal patients.

SourceElsevier·JournalBiological Psychiatry·DateSep 10, 2009

Globally, 2 in 5 adolescent deaths are due to injuries and violence, and death rates much lower in high-income countries

The study reveals that nearly two-thirds of adolescent deaths in sub-Saharan Africa and Southeast Asia occurred, despite these regions containing only 42% of the global 10—24-year-old population. Traffic accidents and violence were among the leading causes of death, with more than half of all deaths due to injuries or violence.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 10, 2009

Children with fatter midsections at increased risk for cardiovascular disease

Researchers found that obese children with larger waists are more likely to develop risk factors for cardiovascular disease, including high triglycerides and low HDL levels. Routine waist measurements may help identify which children are at a greater risk of developing the warning signs of cardiovascular disease.

SourceMedical College of Georgia at Augusta University·JournalInternational Journal of Pediatric Obesity·DateSep 10, 2009

CSIRO sets science path for new telescope

The CSIRO has chosen 10 major science projects for its Australian SKA Pathfinder (ASKAP) telescope, which will tackle astrophysical issues and advance the field of astronomy. The projects include a deep survey for star-forming galaxies and a survey for galaxies containing neutral hydrogen gas.

Ground Zero-scale trauma can prompt psychological growth, says UB researcher

A University at Buffalo researcher has found that people who live through traumatic experiences can bounce back and even grow stronger, thanks to certain qualities such as emotional expression, social support, and a positive outlook. These factors are crucial in predicting levels of distress and resilience among trauma survivors.

SourceUniversity at Buffalo·JournalThe Journal of Nervous and Mental Disease·DateSep 10, 2009

A boy for every girl? Not even close

A new study published in Current Biology found that a parasite killing male butterflies caused a rapid shift in the sex ratio of a tropical butterfly species, from 2:1 to 10:1. The researchers used museum specimens and modern tools to analyze the changes, providing insight into evolutionary processes.

SourceCell Press·JournalCurrent Biology·DateSep 10, 2009

Common mental disorders may be more common than we think

A longitudinal study of over 1,000 New Zealanders from birth to age 32 found that people underreport mental illness, and the actual rate of anxiety, depression, and substance dependency may be higher. The study's findings challenge current diagnostic standards and suggest that mental illness may be more common than previously thought.

SourceDuke University·JournalPsychological Medicine·DateSep 10, 2009