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Science News Archive 2011 - Page 30


Page 30 of 311

Mortality rates for pharynx and mouth cancers have decreased

Mortality rates for patients with oral cavity and pharynx cancer have decreased significantly between 1993 and 2007. The largest declines were observed among black men and women with at least 12 years of education, suggesting that improvements in detection, treatment, and risk factors contribute to these decreases.

SourceJAMA Network·JournalArchives of Otolaryngology - Head and Neck Surgery·DateNov 21, 2011

Kilobots are leaving the nest

The Kilobots are a collective of quarter-sized robots that can be programmed and operated by a single user, making it easy to test collective algorithms on hundreds or thousands of robots. Researchers aim to advance the understanding of collective behavior and its potential to deliver solutions for various challenges.

Hope for muscle wasting disease

A health supplement commonly used by bodybuilders, L-tyrosine, has shown rapid and dramatic improvement in muscle wasting disease Nemaline Myopathy (NM) in laboratory tests on mice. Trials suggest it could also be effective for a range of other muscle-wasting diseases, offering new hope for treating children affected by the condition.

Regeneration after a stroke requires intact communication channels between brain hemispheres

A study published in Human Brain Mapping found that damaged corpus callosum and impaired interhemispheric communication hinder motor skill recovery in stroke patients. The researchers used imaging methods to show increased activity on both sides of the brain and lower tapping speed in stroke patients compared to healthy controls.

SourceMax-Planck-Gesellschaft·JournalHuman Brain Mapping·DateNov 21, 2011

Hidden hunger from wildlife loss

A study by Christopher Golden found that lost access to bushmeat led to a 30% relative increase in malnutrition among children under 12, with iron deficiency anemia being the most prevalent form of malnutrition globally. The research suggests a balance between conservation and human health is needed.

SourceHarvard University·JournalProceedings of the National Academy of Sciences·DateNov 21, 2011

Tuning out: How brains benefit from meditation

A new study by Yale researchers found that meditation decreases activity in the default mode network, a region linked to daydreaming and psychiatric disorders. Experienced meditators also show increased present-centered awareness, indicating improved mental control over 'self'-centered thoughts.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateNov 21, 2011

Boosting the aged immune response to flu virus

Researchers identified a new immune system defect in aged mice that makes them more susceptible to severe respiratory viral infections. Inhibiting the immune molecule PGD2 can reverse this defect, suggesting a potential therapeutic approach for older patients with severe respiratory viral infections.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateNov 21, 2011

Nursing home quality scorecards don't tell the whole score

A new study finds that government scoring systems for nursing homes do not accurately evaluate the quality of care for residents with behavioral and psychological symptoms related to dementia. The study suggests that facilities with high numbers of cognitively impaired residents receive lower scores despite providing better care.

SourceIndiana University School of Medicine·JournalJournal of the American Medical Directors Association·DateNov 21, 2011

It pays to be healthier

Financial incentives are effective for altering simple behaviors like immunization take-up and attendance at health services, but less effective for complex behaviors such as smoking. Regular reinforcement with social support and skill training significantly increases success rates.

SourceSpringer·JournalInternational Journal of Behavioral Medicine·DateNov 21, 2011