Articles tagged with Physiological Stress
A new study found that chronic stress accelerates biological age, as measured by an 'epigenetic clock.' However, individuals with stronger emotion regulation and self-control were more resilient to the negative effects of stress on aging. This suggests that managing psychological health can help extend a healthy lifespan.
Researchers discover changes in muscle torque recovery can predict maximum voluntary strength gains but not delayed-onset muscle soreness. The study's findings offer a promising approach to assessing muscle damage symptoms after exercise.
A Dartmouth study uses mobile sensing to predict individual job performance based on commute data, revealing the link between work commute and job quality. The research also shows how data from personal tech devices can help improve employee productivity and satisfaction.
Research suggests COVID-19 pandemic has adverse effects on women's menstrual cycles due to stress and sleep disturbance. Women are experiencing increased rates of depression, anxiety, and poor sleep.
Fish from the Gobiidae family change color more efficiently and effectively when alone, contrary to previous assumptions. This is likely due to reduced stress levels, allowing for faster and more accurate camouflage.
A study found that meditation training reduced chronic stress by 25% through decreased cortisol levels in hair. The researchers used a 9-month training programme to measure the effect, and the results showed that only sufficiently long training leads to significant stress-reducing effects.
Research suggests that people sensitive to stress hormones are at greater risk of developing cardiovascular disease, with markers indicating increased risk of stroke and heart attack. A novel proteomic signature may help identify these individuals and inform stress management strategies.
A study of Finnish adults with overweight found that higher sleep-time parasympathetic activity is associated with healthier diets and lower alcohol consumption. Those with a good stress balance reported better diet quality, fibre intake, and self-control.
Researchers used a hair cortisol test to detect the impact of COVID-19 on stress levels in families, finding that negative changes predicted greater cumulative stress in children. The study highlights the need for tailored assistance to support families at risk, with long-term effects on children's future capacities.
Researchers at the University of Houston have developed a smartwatch technology that can monitor and help lower stress levels by detecting changes in skin conductance response. The device sends reminders to listen to relaxing music when stress is detected, forming a closed-loop system.
A recent study found that racial identity can influence the way Black adolescents experience anticipatory stress about racism. While high private regard was associated with less psychological stress, high centrality scores were linked to worse anticipatory stress across the board. The researchers also discovered that higher public rega...
Researchers from Gero and Roswell Park Comprehensive Cancer Center discovered that biological age is changing over time, leading to reduced resilience. As people age, it takes longer to recover from stresses, and chronic diseases are linked to loss of resilience.
Researchers found a correlation between heat stress, sun-induced fluorescence, and grain quality, affecting soybean crop yield. The technique may help identify more heat-resistant crops and aid farmers in selecting suitable crops for the U.S. Corn Belt.
A new study reveals the importance of nutrition in maintaining redox balance and coping with viral infections. The endothelium's regulatory function is also crucial in protecting blood cells from damage, while gasotransmitters play a key role in sensing environmental changes. These findings may inform future therapeutic approaches.
Researchers found that prolonged warm water causes coral heat stress, disrupting nutrient cycling and leading to starved corals. Monitoring nutritional status can help anticipate bleaching problems.
Researchers developed a fluorescence-based sensor for continuous cortisol detection, overcoming existing laboratory methods. The new sensor showed low levels of detection and reversible response in vitro, paving the way for an implantable sensor for real-time monitoring.
A recent study published in Biology of Sex Differences suggests that DHA supplementation during periods of high stress may reverse the negative impact of maternal stress on unborn males. Researchers found that exposure to prenatal distress decreased placenta and embryo weight in males but not females, while DHA groups showed a reversal...
A study of low-income single Black mothers in Chicago's South Side found that chronic stress from violent neighborhoods alters gene activity in immune cells. The 'hunker down' response to long-term threat can lead to accelerated aging and worsened health outcomes.
New research from the University at Buffalo suggests that satisficers, who make minimal decisions, may feel incapable of managing their choices due to stress. This approach is often misunderstood as being less particular or careless, but rather a defense mechanism against overwhelming decision-making stress.
Low-ranking male hyenas experience higher levels of stress when interacting with rivals, limiting their access to desirable females and reproductive success. This mechanism is more crucial than physical traits in determining offspring quality and quantity.
A new study in the Journal of Dairy Science found that heifers trained on a phantom before introducing an automated milking system visited the actual system more frequently, increasing milk yield. The training program reduced the need for human assistance during milking and prepared animals well for early lactation.
Researchers Scott Glaberman and Ylenia Chiari investigate the relationship between body size and longevity in Galapagos tortoises. They hypothesize that enhanced ER stress responses contribute to the evolution of large body sizes and long lifespans.
Researchers discovered that iodide levels increase in people's and animals' blood during severe stress, such as trauma or hibernation. This finding could lead to new treatments for traumatic injuries and COVID-19 by harnessing the body's natural response to stress.
A new study on over 540 baboons in Amboseli National Park in Kenya reveals that male baboons who have close female friends are more likely to survive than those without them. Males with strong social connections, particularly with females, live longer lives.
Research on wild baboons reveals that early childhood experiences, such as famine or abuse, have a lasting impact on adult stress responses, regardless of social support. The study found that dysregulated stress hormones remain unaffected by healthy, supportive relationships in adulthood.
Researchers study rituals as a mechanism of resilience against anxiety, finding that performing familiar rituals reduces psychological and physiological stress. This approach suggests that ritual provides the brain with a sense of control and structure, alleviating stress and potentially coping with chronic anxiety.
Researchers at GW University are investigating changes in the ventral tegmental area of the brain during chronic stress, a common contributor to depression and anxiety disorders. The study aims to understand how stress affects the reward circuitry and identify potential treatments.
A recent study found that walking with a shelter dog can decrease psychological and physiological stress indicators in military veterans, particularly those with higher PTSD symptom severity. The researchers measured heart rate variability, salivary cortisol, and alpha-amylase before, during, and after walks with dogs or humans.
A recent NTNU study on wild boars in France reveals that rapid growth and early maturity may not come at a cost. In fact, faster-growing males had lower mortality rates due to hunting and natural causes, while females showed no significant impact from early reproduction.
A team of researchers discovered that distinct neural circuits in the forebrain send signals to the brain's control center to regulate sighing in response to stress, anxiety, or relief. Sighing rate increased when mice were confined, indicating a complex interplay between physiological and emotional inputs.
A wearable biosensor, VitalScout, accurately monitors heart rate and respiration rate to calculate stress levels. The sensor's metrics correlate strongly with breathing analyses, offering a useful tool for healthcare professionals to manage stress.
Yale researchers have identified a neural home of the feeling of stress in the brain, revealing a network of connections from the hippocampus to the dorsal lateral frontal cortex. This discovery may help develop targeted therapies for anxiety and other mental health disorders.
A study by University of Houston found that constant email interruptions can create sadness and fear among office workers, negatively impacting work environment. The researchers suggest email batching as a solution to mitigate these effects.
A neural circuit in deep brain areas drives physical responses to emotional stress, including increased blood pressure and heart rate. Blocking this circuit may help reduce stress symptoms in rats, suggesting a potential target for treating stress-related disorders like panic disorder and PTSD.
Research finds that children physically respond when parents hide their emotions, making them less warm and engaged with each other. The study suggests that parents should give themselves permission to feel emotional to better problem-solve and honor their child's feelings.
Research led by Dr. Si-Qiong June Liu found that stress changes the structure of the brain and affects communication between nerve cells. A single stressful event can produce quick and long-lasting changes in astrocytes, which may lead to new pharmacological targets for preventing or reversing stress-induced changes.
Researchers at the University of Turku found that elephants with higher cortisol levels also had higher heterophil to lymphocyte ratios, indicating a positive correlation between biological measures of stress. Additionally, elevated stress was linked to weight loss in Asian elephants.
Forests are shifting towards communities that can cope with greater water stress, driven by the death of less hardy trees and the growth of more resilient ones. This adaptation may buffer forests against climate change effects in the short term.
Researchers at Yale University found that mice exposed to stress in the womb and after birth experience lifelong immune system deficiencies, making them more susceptible to bacterial infections and tumors. Early-life exposure to glucocorticoids permanently alters immune responses, rewiring the body to respond differently.
35 coral species on Turks and Caicos Islands remained resilient during a severe global bleaching event. Corals that experienced bleaching quickly recovered, with some appearing healthier in 2017 than in 2014.
Researchers found that prebiotic dietary fiber can influence gut bacteria and produce bioactive molecules that may modulate stress physiology and sleep. The study used mass spectrometry to analyze rats' fecal samples and found that those on the prebiotic diet had a different metabolome, including higher levels of fatty acids and sugars.
Researchers at LSU found that cats were less stressed when played cat-specific music, with lower cat stress scores and handling scale scores compared to classical music and no music. The study suggests that cat-specific music may benefit both cat welfare and owner experience.
Two pilot studies reveal changes in brain connectivity related to stress and problem-solving ability, suggesting a biomarker for stress-induced cognitive impairment. The findings, published in Brain Imaging and Behavior and NeuroImage, could ultimately inform treatment strategies for patients suffering from stress-related illnesses.
A study using high frequency heart rate variability found that mindfulness meditation sessions incorporating nonjudgment led to better recovery in perfectionists. Nonjudgment element improved mental health outcomes compared to general mindfulness sessions.
A study published in the American Society for Horticultural Science journal HortTechnology found that simply gazing at an indoor plant can reduce psychological stress in office workers. The researchers discovered that even passive involvement with plants, such as having a plant on their desk, contributed to significant anxiety reduction.
A study simulates forest responses to projected climate changes using a model of plant physiology. Acclimation allows trees to adjust leaf area, photosynthetic capacity, and stand density to avoid stress, but its effectiveness varies with warming levels.
The study reveals that the winner of the climate tug of war between CO2 fertilization and heat stress depends on the ratio between the two. If forests can acclimate, they can tolerate a lower ratio, but if not, it's above 89 parts per million CO2 per degree C of warming. Other factors like forest fires, insect infestation, and exceptio...
Researchers found that minute facial sweating can measure stress during knowledge production, while presenting views to management is more stressful than producing them. The study also revealed that spell checkers save time in long writings and that neurotic individuals perform better with email distractions.
Researchers propose a novel framework to analyze thousands of complete data sequences from stress echocardiography, revealing early signs of cardiovascular disease. The method uses Multiple Kernel Learning (MKL) to project heterogeneous data into a low-dimensional space, distinguishing between healthy and pathological responses.
A new study reveals that frail patients are at a significantly higher risk of death after even minor surgeries, including laparoscopic gallbladder removal. The researchers found that patients classified as frail or very frail had mortality rates of up to 43% after moderate-stress procedures.
A landmark study suggests that e-cigarette use is associated with coronary vascular dysfunction at rest, even in the absence of physiologic stress. The researchers found that blood flow decreased after both inhalation and handgrip stress in e-cigarette users compared to traditional cigarette smokers.
Researchers at Washington State University discovered that interacting with animals for just 10 minutes can lower cortisol levels, a major stress hormone, in college students. The study involved 249 participants divided into four groups, with the first group showing a significant reduction in cortisol levels after petting cats and dogs.
Research at Children's National Hospital found that infants with hypoxic-ischemic encephalopathy (HIE) exhibit lower heart rate variability, a marker of autonomic nervous system stress. This study suggests heart rate variability as a valuable physiological biomarker for detecting brain injury in babies with HIE.
James Cook University scientists found that ignoring recovery between endurance and resistance training can impair endurance development. The team suggests prioritizing recovery periods and adjusting training variables such as intensity and volume to minimize fatigue between modes of training.
Analysis of human remains from a Pre-Roman Celtic cemetery in Italy shows variations in funerary treatment that may be linked to social status, despite no differences in living conditions. The study found distinct diets for men and women, as well as higher rates of dental enamel defects in the population.
Researchers at Lobachevsky University discovered that the electrophoretic mobility of red blood cells and buccal epithelium cell analysis can effectively assess stress response severity. These indicators reflect engagement of stress-implementing systems and immune system effectiveness.
Researchers found that controlled stress in adolescence attenuates HPA axis activation in adulthood, reducing motor impulsivity and increasing dopamine type 2 receptors. Uncontrollable stress, however, increases impulsivity and cognitive inflexibility.
A small Ohio State University study found a disconnect between Mexican immigrants' positive accounts of living in the US and their physical signs of stress, such as high blood pressure and obesity. The researchers believe these migrants use positive narratives to cope with discrimination and stress.
Researchers from Lobachevsky University have discovered that erythrocytes undergo changes in their nanostructure when subjected to stress, which can lead to programmed cell death. This finding has significant implications for the development of optimal treatment regimens for patients with atherosclerosis and coronary heart disease.
A new study published in Psychophysiology found that thinking about one's romantic partner can lower blood pressure during stressful situations, just as effectively as having the partner physically present. The study suggests that high-quality romantic relationships may support people's health by enabling better stress coping mechanisms.