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Penn State


Americans struggle with long-term weight loss

Only one in six Americans who have ever been overweight or obese successfully maintains their weight loss, according to a new study. The researchers found that women, adults aged 75-84, and non-Hispanic whites were more likely to achieve long-term weight management.

SourcePenn State·JournalInternational Journal of Obesity·DateSep 3, 2010

Polyphenol antioxidants inhibit iron absorption

Research by Penn State scientists found that certain polyphenols, such as grape seed extract and EGCG in green tea, inhibit iron absorption. The polyphenols bind to iron in intestinal cells, forming a complex that cannot be transported into the bloodstream.

SourcePenn State·JournalJournal of Nutrition·DateAug 23, 2010

On-the-job injuries hurt home health care industry

A Penn State study found that home health aides who received training had lower injury rates and higher job satisfaction. Training also reduced turnover intentions, benefiting both employees and organizations. Employees' perceptions of their training and workplace played a crucial role in their risk of injury.

New hypothesis for human evolution and human nature

Paleoanthropologist Pat Shipman suggests that humans' ability to nurture other animal species contributed to the development of language and tool-making, ultimately leading to domestication. This 'animal connection' allowed early humans to develop a system of communication and observation, which became increasingly advantageous over time.

SourcePenn State·JournalCurrent Anthropology·DateJul 20, 2010

Small fish exploits forbidding environment

A new species of small fish, the bearded goby, has been found to eat jellyfish and thrive in an oxygen-depleted zone off the coast of southwest Africa. This unexpected predator-prey relationship puts jellyfish back into the food cycle.

SourcePenn State·JournalScience·DateJul 15, 2010

Newborn stars discovered in dark cosmic cloud

Astronomers have detected a wave of massive star formation within the M17 SWex dark cloud, revealing 488 newly forming stars, including 200 blue-white class B stars. The discovery sheds light on how and when massive stars form, with theories suggesting an expanding shock wave or later formation may be necessary.

SourcePenn State·JournalThe Astrophysical Journal Letters·DateJul 7, 2010

Lone whales shout to overcome noise

Research reveals that North American right whales adjust their calls in response to increased ocean noise levels, maintaining signal-to-noise ratio while incurring costs. This adaptation is crucial for successful communication in a noisy ocean, but its long-term effects on whale behavior and population health remain uncertain.

SourcePenn State·JournalBiology Letters·DateJul 6, 2010

WIC might prevent mothers from feeding cow's milk too early

Women who enrolled in WIC during their first or second trimester were less likely to introduce cow's milk too soon than those who enrolled later. This study highlights the importance of timely nutrition reinforcement for low-income mothers and their children's health.

SourcePenn State·JournalJournal of the American Dietetic Association·DateJun 29, 2010

The image in the mirror and the number on the scale both count

A new study published in the Journal of Health and Social Behavior found that adolescent girls who perceive themselves as overweight but have a healthy weight are more likely to experience depressive symptoms than those with actual obesity. Additionally, underweight boys are also at high risk for distress. The researchers suggest that ...

SourcePenn State·JournalJournal of Health and Social Behavior·DateJun 28, 2010

More than skin deep, tanning product of sun's rays

Researchers found that tanning is a response to varying levels of ultraviolet radiation, particularly in middle and high latitudes. This adaptation helps protect humans from harmful effects of sunlight, including vitamin D deficiency and folate destruction.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateJun 21, 2010

Alternative pathway to malaria infection identified

Researchers have identified the complement receptor 1 (CR1) as an alternative protein used by the malaria parasite to invade red blood cells. This finding has significant implications for the development of a vaccine against malaria, and may help prevent the proliferation of parasites that rely on this pathway.

SourcePenn State·JournalPLOS Pathogens·DateJun 17, 2010

Some people do not taste salt like others

Research suggests that genetics play a role in salt taste preference, with some individuals preferring salty foods over others. The study found that supertasters, who experience tastes more intensely, consume more salt due to their sensitivity to bitter tastes.

SourcePenn State·JournalPhysiology & Behavior·DateJun 16, 2010

Straw residue helps keep nitrogen on the farm

Research found that adding straw residue to hairy vetch cover crops can reduce legume nitrogen losses, but may lower crop yields. The study revealed that straw residue reduced soil inorganic nitrogen content by an average of 7.3% compared to treatments with only legume residues.

SourcePenn State·JournalAgronomy Journal·DateJun 14, 2010

Pistachios offer multiple benefits

Researchers found that eating pistachios increases blood serum levels of lutein, beta-carotene, and gamma-tocopherol. These antioxidants may help lower oxidized LDL concentrations, which can contribute to inflammation and plaque buildup inside blood vessels.

SourcePenn State·JournalJournal of Nutrition·DateMay 20, 2010

Particulate air pollution affects heart health

Researchers found that particulate air pollution from PM2.5 exposure can affect heart electrophysiology up to six hours after inhalation, leading to increased risk of cardiovascular disease. Elevated PM2.5 levels may trigger acute cardiac events and contribute to chronic heart disease.

SourcePenn State·JournalEnvironmental Health Perspectives·DateMay 19, 2010

Ancient leaves help researchers understand future climate

By studying fossil plant remains, scientists can gain insights into past temperatures and environmental conditions. The researchers found that water availability and plant type significantly impact the exchange of carbon isotopes between plants and the atmosphere.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateMay 6, 2010

First course of veggies may appeal to hungry preschoolers

Researchers found that serving carrots as a first course increased broccoli consumption by nearly 50-100% among preschool children. The findings challenge conventional beliefs and provide a simple strategy for parents to promote healthy eating habits in their young children.

SourcePenn State·JournalAmerican Journal of Clinical Nutrition·DateMay 5, 2010

Roots meshed in waste materials could clean dirty water

A new water treatment system, developed by Penn State researchers, utilizes discarded materials and plant communities to remove pollutants from wastewater. The system has shown to be effective in reducing pollutants by over 90% within three days, making it a promising alternative for conserving global fresh water supplies.

Earlier, later puberty may trigger aggression in boys

Research found that earlier puberty in boys triggers chemicals related to antisocial behavior, while later puberty is associated with higher levels of cortisol. This study suggests that parents should be aware of the potential impact of puberty on their children's behavior and provide sensitive support.

SourcePenn State·JournalPsychoneuroendocrinology·DateMay 3, 2010

Pennsylvania makes inroads into reducing child obesity

In Pennsylvania, school districts set goals to reduce childhood obesity through improved snacks and nutrition education, resulting in a 75% increase in healthy food options. However, physical activity opportunities remained stagnant despite legislation requiring it, leaving room for improvement.

SourcePenn State·JournalHealth Affairs·DateApr 26, 2010

Song receives ACS's Henry H. Storch Award in Fuel Chemistry

Chunshan Song has been awarded the Henry H. Storch Award in Fuel Chemistry by the American Chemical Society for his outstanding contributions to clean fuels and catalysis research. His work focuses on developing innovative methods for producing advanced thermally stable jet fuels and removing sulfur from liquid hydrocarbon fuels.

Family caregiving stress filled and isolating

A recent study found that family caregivers with dementia experience a wide range of stressors, including behavior issues and financial strain. While existing interventions focus on specific stressors, research suggests that a one-size-fits-all approach is insufficient, highlighting the need for personalized interventions.

SourcePenn State·JournalAging & Mental Health·DateApr 22, 2010

Knowledge is power in Penn State blood pressure study

A study led by Penn State researchers found that an educational intervention, combined with home blood pressure monitoring, significantly improved patient knowledge and has the potential to lower blood pressure. The project aims to empower patients with high blood pressure to take control of their health.

Boehman to receive fuel science award

André Boehman, professor of fuel science at Penn State, will receive the 2009 Society of Automotive Engineers' John Johnson Award. He co-authored a paper on increased NOx emissions from fueling heavy-duty compression-ignition engines with soy biodiesel.