A combination of over-the-counter antioxidants shows promise for mitigating damaging effects of heart failure with preserved ejection fraction. Treatment improved markers of vascular function and inflammation in some patients, suggesting a simple and readily available option to improve vascular health.
New research reveals that melatonin's antiarrhythmic benefits are distinct from its antioxidant properties. In a rat model of heart attacks, melatonin treatment reduced incidence of ventricular tachycardia and fibrillation, but this effect was not associated with oxidative stress.
A new study suggests that using performance-enhancing steroids may increase the risk of cocaine use and addiction in teens, as well as impair fertility. Researchers found that female rats exposed to anabolic steroids showed increased sensitivity to cocaine and reduced ovary weight.
A study found that teenagers with ADHD who got less sleep experienced significant deficits in executive functioning skills, including working memory, planning, and organization. In contrast, those who got more sleep showed improved performance.
A new study found that vegetarian volunteers who took a daily creatine supplement showed improved brain function and higher scores on a neurocognitive test compared to non-vegetarians. Vegetarian diets tend to have lower creatine levels, but supplementation can help bridge this gap.
A new mouse study found that consuming alcohol and a high-fat diet activate the same brain circuitry, leading to binge eating patterns. This research suggests that limiting access to high-fat foods may help curb excessive alcohol consumption.
A new study found that device-guided breathing can improve physiological symptoms in people with severe posttraumatic stress disorder (PTSD), including lower heart rate and muscle tension. The treatment shows promise for reducing the risk of future hypertension in this population.
Research suggests that blocking opioid receptors can reverse the increase in sugar consumption caused by hormone therapy. The study found that estradiol treatment increased sugar intake in rats, but blocking opioid receptors with naltrexone reversed this effect.
Researchers found that sunscreen and sweat on the skin can protect blood vessel function from UVR exposure, preserving nitric oxide levels. This protective effect may benefit individuals who spend extended periods outdoors, reducing the risk of skin vascular dysfunction.
The symposia series will focus on the gut microbiome's impact on health and disease, featuring speakers on topics such as gut-brain axes and antibiotic effects. Research highlights include studies on acetate, bioinformatics, and metabolomics.
A new study explores the connection between poor sleep and Alzheimer's disease, revealing that sleep helps clear excess amyloid beta and tau proteins from the brain. Disruption of slow-wave sleep can cause a significant increase in these protein levels, suggesting that sleep plays a crucial role in preventing Alzheimer's development.
Researchers found that young women with a family history of hypertension have decreased baroreflex sensitivity, which can be a marker for hypertension and heart disease. This study suggests that these women may be at increased risk for developing high blood pressure later in life.
Research reveals distinct brain regions process concrete and abstract word meanings separately, with a network of areas working together in different languages. The findings provide new insights into how our brains represent word-meaning structure.
A review of over 140 studies explores climate change's impact on animal life, including humans, through increased frequency and severity of heat waves. Behavioral changes, such as altered migration patterns and increased water demands, may lead to dehydration and cellular stress.
A new study published in the Journal of Applied Physiology found that cardiorespiratory fitness is associated with better brain function in older men. The research team discovered that higher fitness levels were linked to improved cognitive skills, including executive function and focus.
Researchers found that curcumin treatment improved muscle function and exercise capacity in mice with heart failure and healthy controls. Curcumin also increased Nrf2 activation and antioxidant enzyme levels, suggesting a novel therapeutic strategy to improve quality of life for people with heart failure.
Researchers found that hot-water immersion improved inflammatory markers and blood sugar levels in overweight men. A two-week treatment period showed a reduction of fasting blood sugar and insulin levels as well as improved low-grade inflammation.
A study found that beet juice deicer causes fluid retention and alters organ function in mayflies, despite being considered a natural alternative to road salt. The researchers suggest that more research is needed to determine the combination of factors causing problems.
Research explores effects of crude oil on native salmon populations, finding exposure causes toxic changes in hearts, brains, and performance abilities. Crude oil also leads to long-term consequences including mortality and brain damage.
Research finds that bigger stingless bee species can fly better in high-temperature conditions than smaller counterparts. This contradicts the well-established temperature-size rule, which predicts that ectotherms should be larger in cold climates and smaller in hot ones.
Researchers discuss potential benefits of inducing torpor in humans for spaceflight and medical treatment. Synthetic torpor could protect astronauts from radiation hazards and reduce demands on spacecraft mass.
Research suggests that climate change-associated flooding can reduce seawater salt content, inducing stress in oyster animals. Even the most tolerant groups show vulnerability to future freshwater flooding events.
A new study finds that individual rainbow trout strains from Canada and California exhibit varying levels of heat and oxygen tolerance. This natural variation may help some fish survive global warming, while others are more vulnerable.
A new study finds that motion sickness and cybersickness share similar symptoms, including nausea, dizziness, and fatigue. The researchers suggest that virtual reality technology could be used to diagnose and prevent motion sickness in high-risk professions.
Long-term testosterone supplementation has been linked to increased blood pressure in obese rats, raising concerns about its safety in certain populations. The study suggests that hormone therapy may not be beneficial for men with heart disease risk factors, highlighting the need for more research on complex effects of testosterone.
A study found that a high-fat, high-sugar diet may accumulate fat around the uterus of female rats, potentially impairing future fertility. Researchers observed no change in glucose tolerance or insulin sensitivity compared to control animals.
A new study found that extreme dieting in female rats led to a decrease in metabolic factors and functions, including body weight and blood pressure, but resulted in a higher accumulation of abdominal fat. This increase in belly fat may cause long-term health risks for people who have previously crash dieted.
A new study found that exercise minimizes changes in muscle mass, bone density, and belly fat when estrogen levels drop, but does not protect against metabolic changes. Researchers discovered that while exercise reduces the risk of osteoporosis, it does not affect resting metabolic rate or energy balance in women with menopause.
A new study suggests that low estrogen levels during menopause may contribute to increased anxiety and minor memory problems. The research, conducted on female rats without ovaries, found a link between estrogen deficiency and anxiety-like behavior.
A new study finds that delayed pregnancy may increase cardiovascular disease risk in both women and their children, with boys at higher risk. Researchers also found sex-specific differences in health risks of the offspring, highlighting the importance of assessing cardiovascular health during pregnancy.
Researchers found a combination of liraglutide and enalapril effectively addresses all symptoms of postmenopausal polycystic ovary syndrome (PCOS), including metabolic syndrome. The treatment promotes significant weight loss, reduces insulin resistance, and normalizes blood pressure.
A new rat study suggests that individual variations in genetic makeup and gut bacteria may explain the different effects of antibiotics on blood pressure. The researchers treated two strains of rats with three common antibiotics, resulting in distinct responses in systolic and diastolic blood pressure. These findings highlight the impo...
A new study found that long-term heat therapy increases mitochondrial function in the muscles by an average of 28 percent. Heat therapy may provide a new treatment option for people with chronic illness or disease who cannot exercise regularly.
A high-fat, high-sugar diet that leads to obesity may contribute to the development of Alzheimer's disease when paired with normal aging. The study found significant differences in inflammation and insulin resistance markers between obese and healthy mice.
A pilot program at the University of New Hampshire at Manchester introduced a semester-long course with a study abroad trip to Belize, making it more affordable for students. Financial aid covered full or partial costs for seven students, while all participants reported increased confidence and likelihood of traveling abroad again.
An online PD program for K-12 teachers increased their confidence and knowledge in areas such as STEM career education and teaching about biomedical career options. Participants also reflected on their teaching practices and participated in online communities of practice.
A new assessment called Exam Roulette uses a game of chance to increase student preparation and motivation for essay tests. Students can preview potential questions, ask clarifying questions, but not receive specific content information, reducing anxiety and stress.
A blended course format that combines online content presentation with weekly interactive class meetings can improve academic achievement and reduce student withdrawal rates. Students who chose the blended format reported less end-of-semester anxiety compared to those studying solely online.
Research suggests that forgetting can increase long-term retention and information retrieval, ultimately enhancing learning. By changing context, forgetting can also enrich how information is encoded and retrieved.
Researchers at Texas Tech University Health Sciences Center flipped their content delivery strategy to prerecorded videos and interactive sessions. Student performance has improved without decline, and most students appreciate the flexibility.
Researchers from the University of Central Florida found that high-performing medical students are more likely to skip non-mandatory in-class sessions without affecting their performance on final exams. This challenges traditional views that attendance is a key indicator of academic success.
A new study found that essential fats in the diet regulate protein secretion in muscles by changing gene expression. Omega-3 and omega-6 fatty acids were shown to improve glucose levels and insulin tolerance in obese rats after 12 weeks on a supplemented diet.
A study found that individuals with chronic anxiety exhibited increased nerve activity in response to physiological and mental stressors, which can lead to high blood pressure and heart disease. The research team measured sympathetic nerve activity and blood pressure in volunteers with and without anxiety.
A new study found higher cortisol levels in medical students during the summer months than in winter. The research contradicts traditional notions of increased stress in winter and relaxed ease in summer.
Researchers found that zinc deficiency can negatively affect egg cell division, viability, and quality, which could impact fertility. The study suggests that micronutrient availability during oocyte maturation is critical for successful fertilization.
Researchers found that hydrated older adults showed noticeable improvement in executive function after exercising, while dehydrated individuals also improved but to a lesser extent. The study highlights the importance of hydration for cognitive health benefits in exercise
Researchers found that black women with obesity burned fewer calories during pregnancy, leading to more retained baby weight. This could influence calorie intake recommendations for pregnant women, particularly those from underrepresented groups.
At the American Physiological Society's President's Symposium Series, top researchers discuss the biology and pathophysiology of exosomes, as well as their use in diagnostic and therapeutic tools. Exosome expert Leland Hartwell concludes the series with a Nobel Prize lecture on the importance of lifelong learning.
The American Physiological Society honors four distinguished physiologists with Distinguished Lectureships. Ole H. Petersen presents on pancreatic physiology and pathophysiology, while Yatrik M. Shah discusses oxygen sensing pathways and their link to cancer. Merry L. Lindsey shares her top five mentoring tips in her lecture.
A new study by Thomas W. Buford et al. examines the ACE I/D gene and its impact on older adults' response to exercise. The researchers found that genetic variations can influence exercise-induced changes in physical function among mobility-limited seniors.