Health News
Top stories featured on ScienceDaily's Health & Medicine, Mind & Brain, and Living Well sections.
AI can now detect COVID-19 in lung ultrasound images
Artificial intelligence can spot COVID-19 in lung ultrasound images much like facial recognition software can spot a face in a crowd, new research shows. The findings boost AI-driven medical diagnostics and bring health care professionals closer to being able to quickly diagnose patients with COVID-19 and other pulmonary diseases with algorithms that comb through ultrasound images to identify signs of disease.
Severe lung infection during COVID-19 can cause damage to the heart
SARS-CoV-2, the virus that causes COVID-19, can damage the heart even without directly infecting the heart tissue, a new study has found. The research specifically looked at damage to the hearts of people with SARS-CoV2-associated acute respiratory distress syndrome (ARDS), a serious lung condition that can be fatal. But researchers said the findings could have relevance to organs beyond the heart and also to viruses other than SARS-CoV-2.
Metformin during pregnancy affects the brain development in offspring mice, study finds
With the rise in gestational diabetes and metabolic disorders during pregnancy, metformin is also being prescribed more frequently. Although it is known that the oral antidiabetic agent can cross the placental barrier, the impacts on the brain development of the child are largely unknown. Researchers have now been able to demonstrate in a mouse model that although metformin has positive effects in pregnant animals, it does not in the offspring.
Perceived gender discrimination linked to decline in wellbeing for older women
A study of more than 3,000 middle-aged and older women living in England showed that those who believed they had encountered gender discrimination were more likely to report declines in wellbeing over time.
Fear may lead women and men to make different decisions when choosing short-VS-long-term rewards
Fear may affect women's decisions in choosing immediate rewards versus larger delayed ones, while men's decisions appear unaffected by emotion, according to a new study.
Ancient giant dolphin discovered in the Amazon
Measuring between 3 to 3.5 meters, 16 million years old: Paleontologists have announced the discovery of a new species of freshwater dolphin in the Peruvian Amazon region. Surprisingly, its closest living relatives can be found in the river dolphins of South Asia.
Study suggests an 'odor sensor' may explain male and female differences in blood pressure
Using data from both mice and humans, a research team has found that a cell surface protein that senses odors and chemicals may be responsible for -- and help explain -- male/female differences in mammalian blood pressure.
Social bonding gets people on the same wavelength
When small hierarchical groups bond, neural activity between leaders and followers aligns, promoting quicker and more frequent communication, according to a new study.
Low social status increases risk of health problems from alcohol problems
Men and women with lower income or education levels are more likely to develop medical conditions related to alcohol abuse compared to similar individuals with a higher socioeconomic status, according to a new study.
Craving snacks after a meal? It might be food-seeking neurons, not an overactive appetite
Psychologists have discovered a circuit in the brain of mice that makes them crave food and seek it out, even when they are not hungry. When stimulated, this cluster of cells propels mice to forage vigorously and to prefer fatty and pleasurable foods like chocolate over healthier foods like carrots.
Powerful new AI can predict people's attitudes to vaccines
A powerful new tool in artificial intelligence is able to predict whether someone is willing to be vaccinated against COVID-19.
While social media changes over decades, conversation dynamics stay the same, new study suggests
A new study has identified recurring, 'toxic' human conversation patterns on social media, which are common to users irrespective of the platform used, the topic of discussion, and the decade in which the conversation took place.
8-hour time-restricted eating linked to a 91% higher risk of cardiovascular death
A study of over 20,000 adults found that those who followed an 8-hour time-restricted eating schedule, a type of intermittent fasting, had a 91% higher risk of death from cardiovascular disease.
Toxic metal particles can be present in cannabis vapes even before the first use, study finds
Though vapes have been heralded as a 'safer' way to consume either nicotine or cannabis, they present their own suite of risks that are being revealed through increasing regulation. Now, scientists have discovered that nano-sized toxic metal particles can be present in cannabis vaping liquids even before any heating occurs, and the effect is worse in illicit products.
A protein found in human sweat may protect against Lyme disease
Human sweat contains a protein that may protect against Lyme disease. About one-third of the population carries a genetic variant of this protein that is associated with Lyme disease in genome-wide association studies.
Biomarkers of the middle-aged brain predict cognitive health in old age
The middle-aged brain could provide a window into future cognitive health. A team reviewed evidence from human and animal studies suggesting that middle age -- commonly considered as the period between 40 and 60 or 65 years of age -- marks a shift in brain aging. They argue that more research should be dedicated to middle age, a period of life that is historically understudied.
Addressing both flu and COVID-19 through a single, multitasking injection
Researchers have identified new drug candidates for preventing and treating major respiratory viral infections.
Industrial societies losing healthy gut microbes
Our eating habits in industrialized societies are far removed from those of ancient humans. This is impacting our intestinal flora, it seems, as newly discovered cellulose degrading bacteria are being lost from the human gut microbiome, especially in industrial societies.
New discovery concerning occurrence of antibiotic resistance
A new study shows how heteroresistance, a transient resistance common in many bacteria, can act as a precursor to the development of antibiotic resistance. According to researchers, this is the first time this link has been demonstrated. 'If heteroresistance is a stepping stone towards resistance, we need to have much better control of its occurrence and effects,' explains the lead researcher behind the study.
Breathe, don't vent: Turning down the heat is key to managing anger
Venting about a source of anger might feel good in the moment, but it's not effective at reducing the rage, new research suggests. Instead, techniques often used to address stress -- deep breathing, mindfulness, meditation, yoga or even counting to 10 -- have been shown to be more effective at decreasing anger and aggression.
Feeling apathetic? There may be hope
A new method that aims to help people develop grit looks promising.
Rise in global fungal drug-resistant infections
A global wave of infections caused by fungi growing drug-resistant has the medical community issuing precautions on how to protect yourself.
New technique helps AI tell when humans are lying
Researchers have developed a new training tool to help artificial intelligence (AI) programs better account for the fact that humans don't always tell the truth when providing personal information. The new tool was developed for use in contexts when humans have an economic incentive to lie, such as applying for a mortgage or trying to lower their insurance premiums.
Laws that punish drug use during pregnancy likely lead to worse health outcomes for families, study finds
Contrary to some claims, laws that criminalize or otherwise punish drug use during pregnancy are more likely to worsen rather than improve health outcomes. The study is the first to systematically review the literature on punitive prenatal drug laws -- an increasingly common state policy strategy for addressing rising rates of prenatal drug use.
Researchers find unanticipated complexity in aging brain's memory decline
Researchers have discovered that the causes of age-related memory decline are more complicated than previously believed. Their study, published in The Journal of Neuroscience, found that neural dedifferentiation is driven by different mechanisms depending on the type of visual stimuli the brain is trying to recall.
Overeating and starving both damage the liver: Cavefish provide new insight into fatty liver disease
Fatty liver, which can lead to liver damage and disease, can occur from both overeating and starvation. Now, new research shows how naturally starvation-resistant cavefish, unlike other animals, are able to protect their liver and remain healthy. The findings have implications for understanding and potentially addressing liver conditions in humans.
Study estimates nearly 70 percent of children under six in Chicago may be exposed to lead-contaminated tap water
A new analysis estimates that 68 percent of Chicago children under age six live in households with tap water containing detectable levels of lead.
Newborn piglets serve as a model for studying influenza
Although prevention and treatment strategies are available for influenza, they are not sufficient for vulnerable populations such as young children and newborns. A team of researchers has studied newborn piglets to better understand the progression of influenza infections.
Kallistatin contributes to the beneficial metabolic effects of weight loss
After weight loss, people with overweight and obesity express more of the protein Kallistatin in subcutaneous white adipose tissue. Kallistatin improves metabolism and could open up new therapeutic options for people with obesity and type 2 diabetes in future.
Landmark study shows that 'transcendent' thinking may grow teens' brains over time
Scientists find that adolescents who grapple with the bigger meaning of social situations experience greater brain growth, which predicts stronger identity development and life satisfaction years later.
Potential novel biomarkers of coronary heart disease discovered
Coronary heart disease is a major global health problem, especially among people with type 2 diabetes. Researchers have identified novel protein biomarkers that are associated with the development of CHD in people with and without diabetes.
Speaking without vocal cords, thanks to a new AI-assisted wearable device
Bioengineers have invented a thin, flexible device that adheres to the neck and translates the muscle movements of the larynx into audible speech. The device is trained through machine learning to recognize which muscle movements correspond to which words. The self-powered technology could serve as a non-invasive tool for people who have lost the ability to speak due to vocal cord problems.
Fatty food before surgery may impair memory in old, young adults
Eating fatty food in the days leading up to surgery may prompt a heightened inflammatory response in the brain that interferes for weeks with memory-related cognitive function in older adults -- and, new research in animals suggests, even in young adults.
Gut bacteria make neurotransmitters to shape the newborn immune system
Investigators discovered that unique bacteria colonize the gut shortly after birth and make the neurotransmitter serotonin to educate gut immune cells. This prevents allergic reactions to food and the bacteria themselves during early development.
Why killer T cells lose energy inside of solid tumors
Researchers have discovered the reason why immune cells lose energy when they enter the solid tumor microenvironment -- and how to restore their energy levels. A metabolic enzyme, called Acetyl-CoA carboxylase, has been identified as the culprit, for it causes T cells to store fat, rather than burning fat for energy.
Less social with age
Scientists tested several hypotheses on the drivers of social aging in free-living Assamese macaques in Thailand. The researchers collected data on the social behavior of females for eight years and found that the size of their social networks decreases with increasing age. The females continued to interact with their close social partners, but gradually withdrew from social interactions altogether. The results contribute to the understanding of the evolutionary origins of social aging.
Abnormal brain structure identified in children with developmental language problems
A rigorous analysis of numerous studies concludes that a part of the brain traditionally associated with movement is abnormal in children with developmental language impairments. The discovery has the potential to improve both the diagnosis and treatment of the language difficulties.
New study reveals breakthrough in understanding brain stimulation therapies
Researchers show that non-invasive brain stimulation can change a specific brain mechanism that is directly related to human behavior.
How the brain translates motivation into goal-oriented behavior, according to new study
Hunger can drive a motivational state that leads an animal to a successful pursuit of a goal -- foraging for and finding food. In a highly novel study, researchers describe how two major neuronal subpopulations in a part of the brain's thalamus called the paraventricular nucleus participate in the dynamic regulation of goal pursuits. This research provides insight into the mechanisms by which the brain tracks motivational states to shape instrumental actions.
Breakthrough could make automated dosing systems universal
Automated insulin dosing systems combine low-cost blood-glucose monitors with insulin pumps that use precision dosing to continuously regulate blood-sugar and hold it steady. Synthetic biologists have found a way to piggyback on the technology and make it universally applicable for the precision dosing of virtually any drug.
Study of long-term student engagement challenges 'one great teacher' narrative of education
A positive relationship with a teacher at an early age may help children to feel more engaged with school, but not necessarily in the long term, new research shows. A new study of more than 3,600 young people in Australia shows that their 'school engagement' -- their interest in school and willingness to learn -- fluctuates between ages eight and 15, especially during the transition between primary and secondary education.
Therapy using intense light and chronological time can benefit heart
Managing circadian rhythms through intense light and chronologically timed therapy can help prevent or treat a variety of circulatory system conditions including heart disease, according to a new study.
Infections from these bacteria are on the rise: New blood test cuts diagnosis time from months to hours
Researchers have designed a platform to perform blood-based diagnoses of nontuberculosis mycobacteria, simplifying and shortening a long-complicated procedure from 6 months to 2 hours. Rapid, accurate diagnosis has never been more important as cases of NTM infections have continued to increase annually, spreading from subtropical regions to more temperate zones in part due to global climate change.