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ScienceDaily: Top Health News |
| Face shape influences mask fit, suggests problems with double masking against COVID-19 Posted: 03 May 2022 08:05 AM PDT In a new study, researchers used principal component analysis along with fluid dynamics simulation models to show the crucial importance of proper fit for all types of masks and how face shape influences the most ideal fit. They modeled a moderate cough jet from a mouth of an adult male wearing a cloth mask over the nose and mouth with elastic bands wrapped around the ears and calculated the maximum volume flow rates through the front of mask and peripheral gaps at different material porosity levels. |
| Study of promising Alzheimer's marker in blood prompts warning about brain-boosting supplements Posted: 03 May 2022 08:05 AM PDT Elevated levels of an enzyme called PHGDH in the blood of older adults could be an early warning sign of Alzheimer's disease. Researchers have consistently found high levels of PHGDH expression in brain tissue and blood samples of older adults with different stages of the disease. |
| Astronauts: Blood clot expert to study blood flow, clot formation in zero gravity Posted: 03 May 2022 07:28 AM PDT This was the first time a blood clot had been found in an astronaut in space, so there was no established method of treatment for DVT in zero gravity. |
| Endocrine-disrupting chemicals may impair bone health in male teens Posted: 03 May 2022 06:15 AM PDT Per- and polyfluoroalkyl substances (PFAS) and phthalates (two types of endocrine-disrupting chemicals) may be associated with lower bone mineral density in male teens, according to a new study. |
| New tool better predicts COPD risk for people of non-European ancestry Posted: 03 May 2022 06:15 AM PDT Initial tests of a new 'crystal ball' for COPD revealed that it is better at predicting risk for both African-Americans and heavy smokers than existing models. |
| Repairing tendons with silk proteins Posted: 03 May 2022 06:15 AM PDT Researchers have developed a silk composite for significantly improved tendon regeneration and repair. |
| Study finds healthy-appearing lupus skin predisposed to flares, rashes Posted: 03 May 2022 05:30 AM PDT A new study finds that the normal-appearing skin of lupus patients contains the same inflammatory signals that are detected when the skin develops a rash, sometimes at even higher levels. Researchers say immune cells undergo an inflammatory transformation that primes the skin without rashes for disease flares. |
| Affirmative action bans had 'devastating impact' on diversity in medical schools, study finds Posted: 02 May 2022 02:09 PM PDT In states with bans on affirmative action programs, the proportion of students from underrepresented racial and ethnic minority groups in U.S. public medical schools fell by more than one-third by five years after those bans went into effect, according to a new study. |
| 'Resetting' the injured brain offers clues for concussion treatment Posted: 02 May 2022 02:09 PM PDT New research in mice raises the prospects for development of post-concussion therapies that could ward off cognitive decline and depression, two common conditions among people who have experienced a moderate traumatic brain injury. |
| Aging and fake news: It's not the story you think it is Posted: 02 May 2022 11:22 AM PDT A new study has found that older adults are no more likely to fall for fake news than younger adults, with age-related susceptibility to deceptive news evident only among those categorized as the 'oldest old.' |
| Self-eliminating genes tested on mosquitoes Posted: 02 May 2022 10:13 AM PDT Scientists have tested a technology to make temporary genetic modifications in mosquitoes. The modifications self-delete over time. |
| Posted: 02 May 2022 09:54 AM PDT DNA-to-protein mapping could help researchers understand some health disparities. |
| Nanotechnology enables visualization of RNA structures at near-atomic resolution Posted: 02 May 2022 09:05 AM PDT Researchers have reported a fundamentally new approach to the structural investigation of RNA molecules. ROCK, as it is called, uses an RNA nanotechnological technique that allows it to assemble multiple identical RNA molecules into a highly organized structure, which significantly reduces the flexibility of individual RNA molecules and multiplies their molecular weight. The team showed that their method enables the structural analysis of the contained RNA subunits with a technique known as cryo-electron microscopy (cryo-EM). |
| AI-enabled ECGs may identify patients at greater risk of stroke, cognitive decline Posted: 02 May 2022 09:05 AM PDT Atrial fibrillation, the most common cardiac rhythm abnormality, has been linked to one-third of ischemic strokes, the most common type of stroke. But atrial fibrillation is underdiagnosed, partly because many patients are asymptomatic. |
| Ablation therapy applied to stomach disorders Posted: 02 May 2022 09:05 AM PDT Researchers have shown that ablation therapy, often used to correct an abnormally beating heart, could be used to correct disorders of the stomach. |
| Cilia-free stem cells offer new path to study rare diseases Posted: 02 May 2022 09:05 AM PDT A group of rare diseases called ciliopathies -- polycystic kidney disease notable among them -- emerge from defects in cilia. These are the tiny hairlike structures on the surface of almost every cell type. Scientists experimentally 'knocked out,' or genetically deleted, the cilia in a population of otherwise normal human pluripotent stem cells. Subsequently, human tissues and mini-organ structures (organoids) derived from these cilia-free stem cells manifested ciliopathy-like symptoms, such those seen in polycystic kidney disease or in certain problems in brain development. |
| New research could help identify babies at risk of brain bleeds Posted: 02 May 2022 09:04 AM PDT Researchers have uncovered a new way to help identify babies and fetuses at high-risk of developing brain bleeds, paving the way for better early intervention. |
| Older men with high body-mass index have more sperm cell irregularities Posted: 02 May 2022 09:04 AM PDT Single-cell analysis of autopsied human testes suggests that abnormalities associated with aging sperm cells might be exacerbated by elevated body mass index (BMI). |
| New insights on the importance of skull channels for brain health Posted: 02 May 2022 09:04 AM PDT Researchers who previously discovered channels in the skull have found that cerebrospinal fluid can exit the brain through these channels to reach the skull's bone marrow, which can detect and respond to infection or injury. Tapping into this process may help investigators study and treat inflammation-related brain conditions. |
| Posted: 02 May 2022 06:48 AM PDT A study of nearly 9,000 children found those who eat a vegetarian diet had similar measures of growth and nutrition compared to children who eat meat. The study also found that children with a vegetarian diet had higher odds of underweight weight status, emphasizing the need for special care when planning the diets of vegetarian kids. |
| Reducing sedentary time mitigates the risk of type 2 diabetes and cardiovascular diseases Posted: 02 May 2022 06:48 AM PDT A new study suggests that reducing daily sedentary time can have a positive effect on the risk factors of lifestyle diseases in only three months. Spending just one hour less sitting daily and increasing light physical activity can help in the prevention of these diseases. |
| Image-based mechanical simulations improve accuracy in gauging healing progress of bone fractures Posted: 02 May 2022 06:48 AM PDT When you first break a bone, the body sends out an inflammatory response, and cells begin to form a hematoma around the injured area. Within a week or two, that blood clot is replaced with a soft material called callus that forms a bridge of sorts that holds the fragments together. Over months, the callus hardens into bone, and the healing process is complete. But sometimes, that bridge between the bones fails to form, creating a nonunion. |
| Breakthrough in treatment for Dupuytren's disease Posted: 30 Apr 2022 08:37 AM PDT Injection of the anti-TNF drug adalimumab into Dupuytren's disease nodules is effective in reducing nodule hardness and nodule size. |
| COVID-19 vaccine technique shows promise for heart disease Posted: 30 Apr 2022 08:36 AM PDT A method for delivering genetic material to the body is being tested as a way to repair damaged heart muscle after a heart attack. |
| Unprecedented increase in number of border wall falls and trauma Posted: 29 Apr 2022 11:49 AM PDT Trauma physicians at UC San Diego Health attribute the rise in injuries to a height increase of the border wall at U.S.-Mexico border. |
| Mother and child vulnerable to endocrine disruptor exposure Posted: 28 Apr 2022 09:54 AM PDT Researchers have shown that exposure to endocrine disruptors during pregnancy can lead to medium and long-term health problems for both the mother and the fetus. They conducted an exhaustive review of the literature on more than a dozen of the most common endocrine disruptors (EDs), as well as several whose effects are less well-known. |
| Not all dietary fibers are equal Posted: 28 Apr 2022 09:54 AM PDT The health benefits of dietary fiber vary across individuals and may depend on the specific type of fiber and the dose consumed, researchers report. |
| New article outlines the characteristics of a 'longevity diet' Posted: 28 Apr 2022 09:54 AM PDT In a new article, researchers describe the 'longevity diet,' a multi-pillar approach based on studies of various aspects of diet, from food composition and calorie intake to the length and frequency of fasting periods. |
| Tumors on withdrawal: Amino acid deficiency shrinks childhood tumors, study finds Posted: 28 Apr 2022 09:54 AM PDT Certain childhood tumors have an extreme need for amino acids. Scientists have now discovered the molecular mechanisms underlying this and how the cancer cells could be turned off. |
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