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ScienceDaily: Top Health News

ScienceDaily: Top Health News


A better alternative to phthalates?

Posted: 25 Sep 2020 10:47 AM PDT

Researchers analyzed urine samples from pregnant women to look for the presence of DINCH, which is short for di(isononyl)cyclohexane-1,2-dicarboxylate. They found concentrations of DINCH in most of the urine samples but no evidence of effects in lab assays on two hormones, progesterone and estrogen.

Comparing face coverings in controlling expired particles

Posted: 25 Sep 2020 08:36 AM PDT

Laboratory tests of surgical and N95 masks show that they do cut down the amount of aerosolized particles emitted during breathing, talking and coughing. Tests of homemade cloth face coverings, however, show that the fabric itself releases a large amount of fibers into the air, underscoring the importance of washing them.

What new research reveals about rude workplace emails

Posted: 25 Sep 2020 08:36 AM PDT

A new study finds that rude emails at work can lead to significant distress for employees. Researchers say that 'active' email rudeness is overloaded with strong negative emotions. By comparison, 'passive' email rudeness leaves people struggling with uncertainty. Passive email rudeness may create problems for employees' sleep, which further puts them in a negative emotional state the next morning, thus creating a vicious cycle.

Research challenges conventional wisdom about key autism trait

Posted: 25 Sep 2020 08:36 AM PDT

A new study into the causes of sensorimotor impairments prevalent among autistic people could pave the way for better treatment and management in the future, say psychologists.

Color-coded biosensor illuminates in real time how viruses attack hosts

Posted: 25 Sep 2020 08:36 AM PDT

All viruses can only do damage by replicating inside the cells of another organism, their host. Researchers have now shown an important mechanism in this host-attacking process, at the single-molecule level in living cells.

Age restrictions for handguns make little difference in homicides, study finds

Posted: 25 Sep 2020 08:36 AM PDT

In the United States, individual state laws barring 18- to 20-year-olds from buying or possessing a handgun make little difference in the rate of homicides involving a gun by people in that age group, a new study has found.

How do Americans view the virus? Anthropology professor examines attitudes, perceptions of COVID-19

Posted: 25 Sep 2020 08:36 AM PDT

A new study looks at how Americans' attitudes and responses have changed during the time of the pandemic and how to many people, the virus is not a biological agent but instead a malicious actor.

3D-printed nasal swabs work as well as commercial swabs for COVID-19 diagnostic testing, study finds

Posted: 25 Sep 2020 08:34 AM PDT

A clinical trial provides evidence that 3D-printed alternative nasal swabs work as well for COVID-19 diagnostic testing as commercial synthetic flocked nasal swabs. Given the ongoing need for widespread COVID-19 testing, the researchers conclude that 3D printing technology offers a viable, cost-efficient option to address swab supply shortages.

Ultrapotent antibody mix blocks COVID-19 virus attachment

Posted: 25 Sep 2020 08:34 AM PDT

A cocktail of powerful antibodies identified in recovered patients locks the coronavirus infection machinery, inhibits SARS-CoV-2 attachment to host cells, and protects animals challenged with the pandemic coronavirus.

Primate brain size does not predict their intelligence

Posted: 25 Sep 2020 08:33 AM PDT

A research team has systematically investigated the cognitive abilities of lemurs, which have relatively small brains compared to other primates. Conducting systematic tests with identical methods revealed that cognitive abilities of lemurs hardly differ from those of monkeys and great apes. Instead, this study revealed that the relationship between brain size and cognitive abilities cannot be generalized and it provides new insights into the evolution of primates.

Study shows Massachusetts response to COVID-19 in nursing homes helped stem infection rate

Posted: 25 Sep 2020 08:33 AM PDT

A new paper found that adherence to infection control processes, especially proper wearing of personal protective equipment (PPE) and cohorting strategies, such as grouping residents based on their risk of infection or whether they tested positive for COVID-19, was significantly associated with declines in weekly infection and mortality rates.

Twinkling, star-shaped brain cells may hold the key to why, how we sleep

Posted: 24 Sep 2020 11:15 AM PDT

A new study suggests that star-shaped brain cells known as astrocytes could be as important to the regulation of sleep as neurons. The study builds new momentum toward ultimately solving the mystery of why we sleep and how sleep works in the brain. The discovery may also set the stage for potential future treatment strategies for sleep disorders and neurological diseases and other conditions associated with troubled sleep.

Genome of Alexander Fleming's original penicillin-producing mold sequenced

Posted: 24 Sep 2020 11:15 AM PDT

Researchers have sequenced the genome of Alexander Fleming's penicillin mould for the first time and compared it to later versions.

Mystery of giant proton pump solved

Posted: 24 Sep 2020 11:15 AM PDT

Mitochondria are the powerhouses of our cells, generating energy that supports life. A giant molecular proton pump, called complex I, is crucial: It sets in motion a chain of reactions, creating a proton gradient that powers the generation of ATP, the cell's fuel. Scientists have solved the mystery of how complex I works: Conformational changes in the protein combined with electrostatic waves move protons into the mitochondrial matrix.

Unusual climate conditions influenced WWI mortality and subsequent influenza pandemic

Posted: 24 Sep 2020 10:53 AM PDT

Scientists have spotted a once-in-a-century climate anomaly during World War I that likely increased mortality during the war and the influenza pandemic in the years that followed.

World first study links obesity with reduced brain plasticity

Posted: 24 Sep 2020 07:19 AM PDT

A world-first study has found that severely overweight people are less likely to be able to re-wire their brains and find new neural pathways, a discovery that has significant implications for people recovering from a stroke or brain injury.

Customizable synthetic antibiotic outmaneuvers resistant bacteria

Posted: 23 Sep 2020 09:47 AM PDT

Antibiotic resistance is one of the world's most urgent public health threats. In the United States alone, tens of thousands of deaths result each year from drug-resistant strains of common bacteria such as Staphylococcus aureus and Enterococcus faecium, which can cause virtually untreatable hospital-acquired infections. Perilously few new classes of antibiotics are being developed to fight infections that have become resistant to traditional treatments, and bringing any new drugs to market could take decades.

Having high cholesterol levels early in life leads to heart problems by middle age

Posted: 22 Sep 2020 02:26 PM PDT

Having elevated cholesterol during the teens or early twenties increases a person's risk of having a heart attack, stroke or other cardiovascular event during middle age.