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Science News Archive April 2019 - Page 32


Page 32 of 44

ACP issues guidance statement for breast cancer screening of average-risk women

The American College of Physicians recommends that average-risk women between 50 and 74 years old undergo breast cancer screening with mammography every other year, as this approach balances benefits and harms. This strategy reduces false-positive findings and overtreatment, while minimizing radiation exposure and related risks.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateApr 8, 2019

You're probably not allergic to vaccines

According to a study published in the Canadian Medical Association Journal, vaccine allergies are extremely uncommon, affecting only one in 760,000 vaccinations. Most side effects from vaccines are not allergic reactions, but rather minor responses that can be managed with over-the-counter medications.

SourceMcMaster University·JournalCanadian Medical Association Journal·DateApr 8, 2019

Observing a molecule stretch and bend in real-time

Scientists have observed the structural bending and stretching of carbon disulphide molecules in real-time, revealing a linear-to-bent transition driven by electronic structure changes. This breakthrough uses advanced laser-induced electron diffraction techniques to capture snapshots of molecular dynamics with sub-atomic resolution.

SourceICFO-The Institute of Photonic Sciences·JournalProceedings of the National Academy of Sciences·DateApr 8, 2019

Online tool encourages healthy weight gain during pregnancy

A new study found that online diet goal-setting helped women with normal body weight achieve healthy weight gain during pregnancy. However, the tool was not effective for women with higher BMI levels, suggesting a need for personalized approaches to dietary change.

SourceElsevier·JournalJournal of Nutrition Education and Behavior·DateApr 8, 2019

Is it genetic code or postal code that influence a child's life chances?

A study published in Nature Human Behavior found that genetic factors play a small role in shaping children's health and educational success, while neighborhood conditions have a significant impact. The research team analyzed data from thousands of children living in Britain and Wales, and found that children growing up in worse-off ne...

SourceColumbia University's Mailman School of Public Health·JournalNature Human Behaviour·DateApr 8, 2019

Excellent catering: How a bacterium feeds an entire flatworm

A single bacterium supplies the gutless Paracatenula worm with lipids, proteins, sugars, fatty acids, vitamins, and other substances for energy and biomass production. The bacteria use chemosynthesis to convert carbon dioxide into organic compounds, which are then delivered to the host in small droplet-like vesicles.

SourceMax Planck Institute for Marine Microbiology·JournalProceedings of the National Academy of Sciences·DateApr 8, 2019

Nutrients from food, not supplements, linked to lower risks of death, cancer

A study published in Annals of Internal Medicine found that adequate intake of certain nutrients from food sources is associated with a reduced risk of death and cancer. However, excess calcium intake from supplements was linked to an increased risk of cancer death. The researchers suggest that nutrients from foods may have beneficial ...

SourceTufts University, Health Sciences Campus·JournalAnnals of Internal Medicine·DateApr 8, 2019

Early agricultural strategies in southern Polynesia

Researchers discovered fossil evidence of early taro cultivation in southern Polynesia, suggesting a history of taro production on the islands. The study indicates that fire was used for clearing forest cover during early cultivation, followed by a decrease in fire and an increase in short-lived plants as production intensified.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateApr 8, 2019

New study exonerates refined grains

A new study published in Advances in Nutrition reveals that refined grains are not associated with increased disease risk and premature death. Refined grain intake was found to have an inverse association with total cancer deaths and a statistically significant inverse association with all-cause death rate.

SourceThe Ginger Network·JournalAdvances in Nutrition·DateApr 8, 2019

Breaking down Beowulf

A team of researchers led by Madison Krieger used statistical analysis to find evidence supporting the theory that Beowulf was written by a single author. The study found consistent metrics throughout the text, including letter combinations, which lends further support to the idea of unity.

SourceHarvard University·JournalNature Human Behaviour·DateApr 8, 2019

Kids living near major roads at higher risk of developmental delays, NIH study suggests

Young children who live close to a major roadway are twice as likely to score lower on tests of communications skills. Children born to women exposed during pregnancy to higher-than-normal levels of traffic-related pollutants have a small but significantly higher likelihood of developmental delays.