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Science News for January 30, 2007


Weight-loss supplement shows good and bad traits

Researchers studying mice and rats found that CLA supplementation led to rapid weight loss in mice but excessive liver fat accumulation, a common side effect of rapid weight loss. In contrast, rats on a CLA-supplemented diet showed decreased insulin resistance despite not losing weight.

SourceOhio State University·JournalJournal of Lipid Research·DateJan 30, 2007

Mayo Clinic research shows young people who died suddenly and inexplicably had genetic heart defects

A Mayo Clinic research study found that over one-third of young people who died suddenly and inexplicably had genetic heart defects. The defects were caused by mutations that impair the heart's rhythm center, leading to conditions such as Long QT syndrome and catecholaminergic polymorphic ventricular tachycardia.

SourceMayo Clinic·JournalJournal of the American College of Cardiology·DateJan 30, 2007

Media coverage of autism differs dramatically

A study by Stanford researchers found that while 41% of autism research deals with brain and behavior, only 11% of media coverage addresses these topics. Instead, 48% focus on environmental causes, such as the childhood MMR vaccine, highlighting a stark disconnect between scientific research and public perception.

SourceStanford Medicine·JournalNature Reviews Neuroscience·DateJan 30, 2007

Investment level in HIV prevention programs related to HIV incidence in the United States

A historical analysis by Johns Hopkins researchers found that increased investment in HIV prevention programs led to a significant decline in new infections. The study suggests that increasing national investment in effective prevention services could further lower infections and save lives and dollars.

SourceJohns Hopkins Bloomberg School of Public Health·JournalAmerican Journal of Preventive Medicine·DateJan 30, 2007

Scandinavian Journal of Economics pays tribute to the rise of political economics.

The Scandinavian Journal of Economics has published a special issue celebrating the rise of political economics, an interdisciplinary field that combines public choice, rational choice, and macroeconomics to study government policy. Key findings include models exploring the evolution of economic institutions, efficiency aspects of poli...

SourceBlackwell Publishing Ltd.·JournalScandinavian Journal of Economics·DateJan 30, 2007

To trust or not to trust your friends

Research by Jorgen Johnsson and Fredrik Sundström found that naive fish benefited from the skills of pre-trained group mates despite having outdated knowledge on predation risk. Social learning improved foraging success, suggesting it can be a beneficial strategy even in uncertain environments.

SourceBlackwell Publishing Ltd.·JournalEthology·DateJan 30, 2007

Dig deeper to find Martian life

Current drills may find essential signs of life on Mars but can't reach the living cells that could survive in ice at Elysium or recent craters due to radiation levels, scientists say. The team found that drilling depth required for finding living cells is much deeper than current probes can reach.

SourceUniversity College London·JournalGeophysical Research Letters·DateJan 30, 2007

Diagnosis by patterned paper

Researchers at Harvard University developed a new class of rapid tests that can carry out several biological tests simultaneously on a single drop using patterned paper. The tests are highly practical, inexpensive, and unaffected by contamination.

SourceWiley·DateJan 30, 2007

Predicting the risk of rheumatoid arthritis for early arthritis patients

Researchers identified 9 clinical variables that independently predict the development of rheumatoid arthritis in early arthritis patients. The formula allows physicians and patients to make evidence-based treatment choices, potentially avoiding serious complications associated with disease-modifying antirheumatic drugs.

SourceWiley·JournalArthritis & Rheumatism·DateJan 30, 2007