Add BrightSurf on Google Email

Science News Archive June 2005 - Page 8


Page 8 of 15

Placebos can bring emotional relief

Researchers found that placebo treatment reduced subjects' ratings of unpleasant pictures and activity in emotional centers. The study generalizes the concept of placebo effect and its underlying neural mechanisms for both pain perception and emotional stimuli.

SourceCell Press·JournalNeuron·DateJun 15, 2005

The bigger the serving, the more young children will eat

A recent study published in Appetite found that preschool children aged 4-6 consume more food when served larger portions, regardless of their previous meal size. The researchers monitored the food intake of 16 children over five days and discovered that increased snack offerings also contributed to higher total daily calorie consumption.

SourceCornell University·JournalAppetite·DateJun 15, 2005

Promoting hair growth

Researchers find that stabilizing a protein called â-catenin drives hair follicle development by reducing the threshold for stem cell activation. Key genes controlling this process are identified, providing new insights into promoting hair growth.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateJun 15, 2005

Gastric bug link to irregular heart rhythm

A study of 59 patients with persistent atrial fibrillation found a strong link between Helicobacter pylori infection and elevated C reactive protein levels, suggesting chronic gastritis may predispose to atrial fibrillation. The researchers also noted that H pylori has properties enabling it to evade the immune system.

SourceBMJ Specialty Journals·JournalHeart·DateJun 15, 2005

Senior citizen support for school spending is growing

A recent study by Penn State researchers found that senior citizens are becoming more supportive of educational spending, defying expectations. The data contradicts long-held assumptions about the role of aging and retirement in shaping attitudes towards school funding.

SourcePenn State·JournalPublic Opinion Quarterly·DateJun 15, 2005

Maryland's poor, African-American communities suffer disproportionate cancer risk from air pollution

A new study found that low-income, African-American communities in Maryland are more likely to be exposed to high levels of air pollutants, increasing their cancer risk. The study suggests that targeted emissions-reduction policies can help mitigate this disparity and improve health outcomes for these communities.

SourceJohns Hopkins Bloomberg School of Public Health·JournalEnvironmental Health Perspectives·DateJun 15, 2005

Logging changed ecological balance for monkeys, damaged health

A study by researchers at the University of Illinois found that intense selective logging changed the ecological balance for three primate species, leading to increased parasitic infections in red-tailed guenons. The monkeys experienced behavioral changes and reduced protein and vital mineral intake due to decreased food availability.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalJournal of Applied Ecology·DateJun 14, 2005

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

A study by Edward F. Coyle found that Lance Armstrong's long-term training increased muscular efficiency, leading to an 8% improvement in power production. Combining this with a planned weight loss, his steady-state power output improved by 18%. This increase in muscle efficiency may be due to an increase in type I muscle fibers.

SourceAmerican Physiological Society·JournalJournal of Applied Physiology·DateJun 14, 2005

Can't serve an ace? Could be muscle fatigue

A recent study published in the Journal of Physiology reveals that muscle fatigue can significantly impact limb control, particularly when visual cues are absent. This finding has significant implications for athletes involved in high-speed, precision-based sports like serving a tennis ball or shooting a bow and arrow.

SourceResearch Australia·JournalThe Journal of Physiology·DateJun 14, 2005

Study examines cost-effectiveness of HPV testing in four European countries

A study examines the cost-effectiveness of HPV testing in France, Italy, the Netherlands, and the UK, finding both triage and combination strategies to be more effective than current cytology-based screening programs. The cost-effectiveness ratios range from $9,800 to $75,900 per year of life saved, depending on the screening interval.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateJun 14, 2005

A poor child may be left behind

A recent study published in Psychological Science found that high-poverty schools often struggle with inadequate educational resources, leading to a significant disadvantage for poor children. In these schools, up to 40% of students fail the writing test and are taught by non-highly qualified personnel.

SourceBlackwell Publishing Ltd.·JournalPsychological Science·DateJun 14, 2005

Food labels 'confuse' consumers

A new study by Cardiff University reveals that European food labels can be based on competing definitions of animal welfare, often reflecting different welfare standards. Welfare-friendly labels can be divided into three groups: explicit welfare content, implicit welfare component, and ambiguous welfare component.