Articles tagged with Physiological Stress
The study creates a worldwide map of coral reefs, highlighting areas with high biodiversity and low stress, to inform conservation efforts. The researchers used fuzzy logic and publicly available data to group reef systems into clusters based on their stress exposure grades.
A 3-year longitudinal study involving 200 middle school teachers and 20 H.I.S.D. schools investigates the impact of teacher stress on student behavior and achievement. The research team combines innovative multi-method approaches to assess stress and teacher effectiveness, using ecological momentary assessment, physiological measuremen...
Research suggests that a mother's nutritional or psychological stress during pregnancy and lactation may create a signature on her child's genes that put the child at increased risk for obesity later in life. Female offspring are more susceptible to developing abdominal fat, prediabetes, and impaired glucose metabolism.
Researchers have developed a simple saliva test and blood analysis to detect early signs of burnout, which can lead to chronic stress, diabetes, cardiovascular disease, and immune problems. The tests may help identify individuals at risk before symptoms develop.
A Scripps Research chemist devised a new method to quantify changes in proteins resulting from stress, which could provide insights into disease progression and treatment. The technique focuses on cysteine S-hydroxylation, allowing researchers to monitor protein modifications at the individual cysteine site.
Researchers found that stress activates memory recall of unrelated experiences in laboratory rats, which may offer insights into post-traumatic stress disorder (PTSD) and related conditions. The study's results suggest that traumatic stress can reactivate non-traumatic memories, linking them to the traumatic experience.
A Northwestern Medicine study found that stressed dopamine-releasing neurons in the brain die prematurely, triggering Parkinson's disease symptoms. The research suggests that controlling this stress with a drug already approved for high blood pressure may delay disease progression.
A new Université de Montreal study found that trained service dogs can significantly reduce stress hormone levels in autistic children, from an average of 33 problematic behaviors to just 25. The dogs also improved socialization skills and overall well-being for the children.
A team of researchers will study the neurobiological mechanisms behind regular aerobic exercise and its potential to prevent drug abuse relapse. Exercise has been shown to exert anti-stress effects, reducing cravings associated with stress by increasing galanin levels in the brain.
Researchers from the University of Western Ontario detected cortisol in ancient Peruvian hair samples to understand how our ancestors responded to life-changing experiences like illness and disease. The study found high stress levels right before death, but also multiple episodes of stress throughout their final years of life.
Researchers found that short-term stress enhances anti-tumor activity in mice, with fewer developing skin cancer and lower tumor burden. The stressed mice showed increased levels of immune-activating genes, suggesting a longer-term enhancement of immunity.
Researchers found that acute stress enhances learning and memory by increasing glutamate transmission in the prefrontal cortex. The study suggests that moderate stress may be beneficial for cognitive function, contradicting the common perception of chronic stress as detrimental.
University at Buffalo researchers found that police officers have a higher incidence of subclinical atherosclerosis due to occupational stress. Lifestyle factors were controlled for in the analysis, leading to the conclusion that policing itself is a risk factor for cardiovascular disease.
Adult day care can help alleviate caregiver stress by lifting responsibility for a few hours, promoting sleep and well-being in those cared for. The study will assess the impact of day care on caregivers' health and stress levels over three years with 180 participants.
Researchers identify three key findings: toxic stress disrupts brain architecture, major risk factors include poverty and abuse, and relieving this stress can improve individual well-being and societal health. The report proposes promising applications in health policy and clinical practice to address these disparities.
Integrative body-mind training (IBMT) alters blood flow and electrical activity in the brain, breathing quality, and even skin conductance, allowing for a state of relaxation, calmness, and reduced stress. IBMT improves connection between central nervous system structures and promotes integration of brain and body.
Exposure to community violence in school-aged children disrupts their normal cortisol production pattern, leading to physiological symptoms and potential long-term negative health effects. The study found a link between stress symptoms and cortisol levels, highlighting the need for healthcare providers to monitor these children's health.
A new study by University of Alaska Fairbanks researchers suggests that the size of male crested auklets' crests may be an indicator of their quality as mates. Males with larger crests have been found to have lower levels of stress hormones, indicating they are better equipped to cope with the challenges of reproduction.
A study published in the Journal of Nuclear Medicine found that myocardial perfusion testing with gated single photon emission computed tomography (gated SPECT) is a more accurate predictor of prognosis in chronic ischemic heart disease. Gated SPECT identified individuals at risk for future cardiac events, enabling early initiation of ...
Researchers at San Francisco State University are using non-invasive techniques to study hormones in wild mammals, revealing surprising results about behavior, social systems, and hormone function. These findings challenge previous research models and suggest species-specific adaptations for reproduction and survival.
Researchers at Vanderbilt University Medical Center have discovered a functional link between the brain's reward and stress signaling circuits. Dopamine, the chief reward signal, works through corticotrophin-releasing factor (CRF) to increase activity in a brain region involved in addiction relapse.
A study by the University of Cambridge found a link between lower cortisol levels and antisocial behavior in male adolescents. The research suggests that antisocial behavior may be linked to physiological symptoms, including a chemical imbalance of cortisol in the brain and body.
Researchers found that critical patients in ICUs can reduce oxide stress and improve their clinical situation by taking antioxidant supplements through diet. The study, published in Critical Care, established recommended amounts of vitamins A, E, and C, as well as minerals, for proper antioxidant defenses.
Research suggests that individuals with severe obstructive sleep apnea may experience increased physiological stress and demand for oxygen during commercial air travel, which can lead to adverse events. This study used simulated flight conditions to assess fitness to fly without supplemental oxygen.
Researchers found that anticipating a positive humorous laughter experience reduces potentially detrimental stress hormones, while increasing beneficial chemicals like beta-endorphins and human growth hormone. The study suggests that seeking out positive experiences can help reduce stress and boost overall well-being.
A new study found that uncontrollable stress worsens symptoms of endometriosis in rats by activating inflammatory mechanisms and damaging organs. The study, conducted on seven female rats, showed that stressed animals developed more severe lesions and organ damage than unstressed controls.
Researchers found ski tourism raises stress levels among capercaillie, harming their fitness and ability to breed. The study recommends keeping forests inhabited by the birds free from tourism infrastructure.
Rutgers researchers found that osteopontin-dependent changes in thymus and spleen lead to organ atrophy in mice stressed under simulated weightlessness. This study demonstrates the critical role of OPN in human diseases such as cancer, multiple sclerosis, and autoimmune responses.
A study by National Space Biomedical Research Institute has found that osteopontin plays a significant role in the immune response to chronic stress. Mice with normal OPN gene experienced weight loss, spleen and thymus atrophy, and reduced white blood cells after three days of hindlimb unloading.
A study by Louise Hawkley and John Cacioppo found that loneliness accumulates over time and contributes to increased stress, chronic inflammation, and poorer sleep quality in older adults. The researchers also discovered that lonely individuals exhibit a heightened state of arousal and are less likely to seek help when stressed.
A Stanford/Packard study found that severe PTSD damages children's brains by reducing the size of the hippocampus, a crucial structure for memory processing and emotion. Children with PTSD were more likely to experience a decrease in hippocampal volume, which can lead to prolonged symptoms and impaired brain development.
Scientists at Stanford University used gene therapy to improve memory and learning in rats under stress, blocking the negative effects of steroids. The experimental technique transforms harmful corticoids into beneficial estrogens, potentially reducing cognitive side effects of steroids.
A recent study published in Integrative Cancer Therapies found that a plant-based diet combined with stress management training can significantly reduce the rate of progression of prostate cancer. The study showed a significant decrease in PSA levels, indicating a reduction in disease progression.
A study found that constant barking in animal shelters can cause physical stress, behavioral responses, and anxiety. New designs, such as individual rooms with access to a play area, have been shown to reduce noise levels and promote social interaction among dogs.
Researchers found that intermittent stresses like high blood pressure cause cardiac abnormalities before the heart enlarges. Exercising mice showed enlarged hearts without damage, while hypertensive mice exhibited structural and cellular changes early on.
A study published in JAMA found that individuals with lower socioeconomic status have poorer physical fitness levels, which can lead to a higher risk of cardiovascular death. The researchers discovered that functional capacity and heart rate recovery were strongly associated with SES and accounted for 47% of the association.
A new study published in Psychophysiology found that mental stress increases blood pressure, which can lead to heart disease. The research used fMRI to correlate changes in brain activity with blood pressure during stress, providing new insights into the physiological effects of mental stress.
A new study found that female rats experienced markedly increased levels of the stress hormone corticosterone compared to male rats. Chronic stress has been linked to various diseases in humans, including mental illness and autoimmune disorders, which are more prevalent among women.
The ASU Resilience Solutions Group is studying how factors of risk and resilience contribute to health and well-being among baby boomers. The project will identify biopsychosocial factors that sustain well-being and protect against disability, aiming to maximize wellness and health.
Research on 24 young men and women found that faster music speeds up breathing and circulation, while slower music decreases heart rate. Musicians experienced a stronger effect due to their ability to synchronize breathing with musical phrases.
Researchers at Public University of Navarra study the response of four grape varieties to hydric stress, finding that recovery of photosynthetic activity varies by variety. The study aims to inform suitable land irrigation policies for each variety, improving wine production.
George Slavich's research finds that severe life events affect depressed individuals' heart rates, blood pressure, and finger temperature. The study sheds light on a potential pathway through which life stress can cause depression.
A new study reviews 80 published studies, finding that routine animal handling, blood collection, and force-feeding can cause significant stress responses. This stress can lead to impaired immune function and elevated levels of stress hormones.
Researchers found that socially isolated hamsters healed wounds at a slower rate than those paired with a sibling, which also reduced stress hormone cortisol levels. Oxytocin treatment improved wound healing in stressed and non-stressed animals.
A recent study found that stress affects men and women differently when it comes to nicotine addiction and relapse. Women experience greater emotional side effects, while men struggle with biological changes during abstinence. The study also revealed that cortisol levels play a crucial role in triggering cravings and withdrawal symptoms.
Research casts doubt on voice-stress lie detection technology, with studies finding dismal results in detecting deception and excluding non-deceitful individuals. The technology's ability to identify micro-tremors related to stress is limited, suggesting it may not be capable of reliably detecting lies.
A study by Emory University researchers found that subordinate cichlid fish had larger gall bladders with dark bile, leading to slower growth and potentially linking social stress to digestive problems. The discovery could hold clues for understanding human gallstones.
Researchers found that adolescents with impaired stress-induced pressure natriuresis showed increased urinary creatine levels and higher blood pressure after stress, indicating excessive kidney workload. This response pattern may lead to early development of renal disease.
Researchers discovered that glucocorticoid steroid hormone promotes pleasure-seeking behaviors, including eating high-energy foods, in response to chronic stress. This finding suggests that comfort food could be a natural way to curb chronic stress and its negative effects on the body.
Researchers at Vanderbilt University are developing a robot that can detect and respond to human emotions. They use physiological signals such as heart rate, skin conductance, and facial muscle activity to analyze a person's psychological state. The robot is programmed to recognize specific patterns and provide supportive responses.
Researchers suggest that improving coping mechanisms could positively affect immune function, hormone levels and potentially influence cancer outcomes. Studies show a link between active coping strategies and improved health benefits.
A study of over 100 patients hospitalized for a heart attack found that repressive coping style can promote adjustment to traumatic stress in the short and long term. The repressive participants had lower rates of acute stress disorder and post-traumatic stress disorder compared to highly anxious participants.
A study found that young black males and females retain sodium even after stress subsides, leading to prolonged elevated blood pressure and increased cardiovascular load. Researchers suggest this impaired natriuresis mechanism contributes to the development of essential hypertension in blacks.
A study found that estrogen biases rats to use a place-oriented task strategy faster than those without estrogen. However, response-driven tasks were completed quicker by rats not on estrogen. The research suggests estrogen enhances some forms of learning but impairs others.
Research by University of Illinois firefighters found that dehydration can lead to decreased blood glucose and sodium levels, highlighting the importance of prehydration and aggressive rehydration after strenuous firefighting activities. Drinking six to eight glasses of water daily may help mitigate these risks.
Researchers found that active stress from a memory task increased the concentration of immune proteins in saliva, while passive stress from watching gruesome videos lowered it. The study suggests that engaging with challenges at work can boost immunity.
Researchers at Ohio State University found that social stress makes specific immune cells resistant to corticosterone, a hormone regulating inflammation. This resistance can lead to uncontrolled inflammation, increasing the severity of infections and tissue damage.
Researchers at Cornell University have discovered that stress can increase the amount of hypericin in St. John's Wort, a popular herbal remedy for depression. The study found that plants under attack from insects produce more hypericin, which may contribute to its effectiveness.
A new study at the University of North Carolina at Chapel Hill found that newer oral contraceptives may reduce the risk of heart problems for women who smoke. The study compared the cardiovascular responses to stress among healthy women taking different formulations of the drugs, including those with smoking habits.
A study of 318 men found that high levels of stress and low social support are associated with higher levels of prostate-specific antigen (PSA) in the blood, a marker for prostate cancer. The research suggests that psychosocial factors may promote prostate disease through direct physiological pathways.