Articles tagged with Human Physiology
A new study found that living in disadvantaged neighborhoods can cause menopause to start earlier, leading to a higher risk of long-term health issues. The research followed nearly 700 women and found those in highly vulnerable areas experienced menopause approximately two years earlier.
Girls who enter puberty early have a higher BMI before, during, and after puberty, increasing the risk of overweight later in life. The study found that biological differences between sexes make girls more vulnerable to this impact.
Women who experience menopause before age 50 are at higher risk of developing fatty liver disease and its related metabolic risk factors. The study found that early menopause is associated with increased risks of pre-diabetes, obesity, hypertension, and dyslipidemia.
A recent study on the Haenyeo divers from Korea found that they have distinct genetic adaptations, including gene variants associated with cold tolerance and decreased blood pressure. The researchers also discovered two unique gene variants in the Haenyeo population that may help them cope with the pressures of diving.
A new study surveyed 147 elite female athletes from various sports and countries, finding that more believed it was fair (43%) than unfair (36%) for athletes with DSD to compete in the female category. The majority also deemed it unethical to require such athletes to medicate for eligibility.
Prolonged sitting impairs forearm cutaneous vascular function, but alternating local skin cooling and heating alleviates this effect. This study found that ambient temperature modulation can mitigate the decline in cutaneous vascular function.
Researchers from Syracuse University found potential benefits of transcranial direct current stimulation (tDCS) on attention and fatigue in post-stroke patients, but results were mixed. Participants who received real tDCS showed decreased fatigue, while actual treatment did not improve attention tests.
Dr. Casal García's work has revealed a significant shift in stride patterns of female elite athletes during 400 meter hurdle competitions, leading to improved performances. Her research aims to tailor athlete training based on individual characteristics, bridging the gap between academia and practical application.
A new study by University of Colorado Boulder researchers suggests that Kenyan Olympian Faith Kipyegon could break the 4-minute-mile barrier with strategically timed pacers. The team's calculations indicate that drafting can reduce air resistance by up to 76%, allowing female runners to improve their times by as much as five seconds.
Chronic exercise training affects female athletes' energy expenditure and slow-wave sleep patterns differently than general women, influenced by menstrual cycles and reproductive functions.
Researchers developed a 3D microscopic version of the human intestines on a chip, allowing for real-time examination of gut microbes' interactions with the human intestine. The 'Gut-Microbiome on a chip' model enables the study of complex interplay between gut microbes and health, facilitating targeted microbiome-based interventions.
A new study from University of Florida researchers finds that heatstroke can lead to lasting, multi-organ damage and obesity in mice for months afterward. The animals' hearts metabolically crashed two weeks after the initial injury, leading to chronic deterioration and weight gain.
The new book, Women's Football: From Science to High Performance, provides evidence-based information on physiological, biomechanical, and social-psychological issues in women's football. It aims to establish a foundation for practice, processes, and scientific research to continue flourishing in the sport.
A new meta-analysis published in the European Journal of Applied Physiology found that using neuromuscular electrical stimulation (NMES) while doing resistance training increases muscle mass and strength compared to resistance training alone. The analysis reviewed over a dozen studies and showed that longer training periods yielded bet...
The University of Plymouth and International Osteopathic Education have formed a partnership to provide a comprehensive Master of Osteopathic Medicine program. The five-year program offers flexible study, clinical teaching in France and international partner clinics, and prepares students for an interdisciplinary practice.
Researchers found a strong link between depression and menstrual pain in a new study published in Briefings in Bioinformatics. Depression may be a cause of dysmenorrhea, rather than a consequence, according to the findings.
Researchers evaluated HIV reservoir in breast milk cells of two women living with HIV, detecting very low levels of cellular HIV DNA. The study's findings support revised recommendations on infant feeding by people with HIV in high resource settings.
Researchers from Medical University of Vienna discovered that TRPV1 is the primary detector of noxious heat in humans, but other molecular mechanisms contribute to protective heat avoidance. The findings have significant implications for research into heat damage prevention and potential new therapies.
A new study found that low energy availability among female athletes impairs performance by up to 18% in short-term tests and increases systemic stress, compromising immune function. Athletes who restrict their food intake experience muscle loss and decreased physical performance.
Researchers found that mice lacking certain signal molecules produced during exercise had reduced oxygen consumption and fat burning, leading to increased susceptibility to weight gain. In humans, those producing more of these alternative versions consumed less oxygen and had lower body fat.
A new study reveals that physiological synchrony significantly enhances perceived romantic attraction. Super Synchronizers, who naturally synchronize well in social and nonsocial contexts, are perceived as more romantically appealing. This study integrates experimental and observational methods to investigate the mechanisms of romantic...
Researchers at Dartmouth College found that fruit fly oocytes can renew chromosome-linking proteins, potentially helping older women reduce pregnancy complications. The discovery could lead to new therapeutic strategies for enhancing protein rejuvenation in human eggs.
A new study found that elite runners who broke the four-minute mile barrier lived on average almost five years longer than the general population. The study reveals that aerobic fitness has a vital role in longevity and healthy living.
Researchers found that inflammatory proteins peak at different times of day based on whether new mothers breastfeed or formula-feed their babies. The study's findings suggest a unique immune profile for lactating mothers and highlight the need for further research into postpartum breastfeeding.
A new study found that postmenopausal women exhibit smaller cortical surface areas in certain brain regions, reduced thalamic subnuclei volumes, and decreased functional connectivity, suggesting a link between menopause-related symptoms and brain changes.
Researchers found that chlorogenic acid enhances osteoblast proliferation and differentiation, while inhibiting RANKL-induced osteoclastogenesis. Administration of chlorogenic acid antagonizes ovariectomized-induced bone loss in rats.
A study found that prenatal discrimination and acculturation stress can alter the strength of infant brain circuits, potentially leading to increased risk for mental health disorders. The research suggests a critical role in treating individuals with kindness during pregnancy.
A study published in PLOS Medicine found that 90% of pregnant women in high-income countries lack key vitamins necessary for healthy pregnancies and fetal development. The situation is expected to worsen as more people adopt plant-based diets, leading to increased risk of nutrient deficiencies.
A study published in PeerJ Life & Environment reveals that advanced footwear technology has significantly improved elite sprint performances, with enhancements ranging from 0.40% to 1.52%. The research found that AFT had a greater impact on female athletes, suggesting a potential future trend in women's track and field.
Researchers created an immunodeficient mouse model of physiological ovarian aging, mirroring female fertility decline with age. The study found decreased oocyte quality, impaired follicle activation and growth, and increased mitochondrial dysfunctions in Old mice.
Research at Osaka University finds that warming up can rapidly activate contractile proteins and improve muscle performance, particularly in skeletal muscles. This difference may allow skeletal muscles to contract quickly upon warming, saving energy and resting when needed.
A new study by Emory and Harvard researchers found that high air pollution exposure during childhood is associated with earlier onset of menstruation in US girls. This increased risk is linked to cardiovascular disease, Type 2 diabetes, and certain cancers later in life.
A new study from Linköping University has found that the appearance of the thymus gland in chest CT scans is linked to immune system ageing. The researchers examined over 1,000 Swedish individuals aged 50-64 and found that fatty degeneration of the thymus was more common in men and those with abdominal obesity. Lifestyle factors such a...
A new study found that body image dissatisfaction during pregnancy varies widely among women, influenced by complex factors such as positive and negative experiences. Negative body image can have serious effects on the mother and baby, including depression, anxiety, and poor quality interactions. The research highlights the importance ...
A study of 132 people found that classical music induces synchronisation in physical responses among concert audience members. Personality traits such as agreeableness and openness are associated with increased likelihood of synchronisation. Synchronisation was observed in movement, heart rate, breathing rate, and skin conductivity.
The study found a correlation between the emergence of sophisticated stone-knapping methods and a relative decrease in large prey quantities. Stone-tipped spears with Levallois technology allowed for more substantial wounds, increasing hunting success.
A study published in Science reveals that ganglia in the neck region are responsible for disrupting melatonin production and causing sleep disturbances in people with heart conditions. Researchers found that macrophages accumulate in the ganglion, leading to inflammation and scarring, which can be treated with drugs.
Mothers with a criminal record and care experience face negative judgements and excessive scrutiny due to their 'known' status. The study emphasizes the need for supportive dialogue across disciplinary boundaries to break cycles of stigma and social care involvement, focusing on safe spaces and trust-building for care-experienced mothers.
A study by Pierre Hakizimana at Linköping University found that the DC signal in the cochlea can provide an indication of ear health status, allowing the brain to decode faint sounds. The discovery may contribute to new research on diagnosing noise-induced hearing loss and has implications for preventing permanent damage from loud sounds.
A new study from Aarhus University reveals that female athletes who consume too little energy through their diet in comparison to their training volume experience negatively impacted muscles' ability to respond to training. The study shows that insufficient energy intake can lead to changes in the hormonal system, including a decrease ...
Researchers updated their protein localization prediction model, MULocDeep, to provide more targeted predictions for biological discoveries. The tool helps researchers design more effective experiments and advance scientific discoveries related to drug development and treating diseases like epilepsy.
Biomedical engineers at UTS have developed an intervertebral disc-on-a-chip, a precision-engineered toolbox for low back pain studies. The device simulates the complex mechanobiology of native tissue, enabling accurate evaluation of experimental methods for treatment or regeneration.
Researchers found that genetic predisposition to lipids, Alzheimer's, and heart disease in the MLXIPL gene locus is shaped by exogenous exposures. Minor alleles of certain variants associated with high triglyceride levels and lower HDL-C levels, which may provide protective effects against Alzheimer's risk.
Researchers from CNRS discover that liver cells control the biological clock in mammals, synchronizing peripheral clocks. This finding suggests a connection between liver health and overall metabolism, with potential implications for metabolic disease and sleep disorders.
A study from Dartmouth College found that athletes' physique is adapted to shedding or retaining heat in certain climates, affecting their performance in Ironman events. Taller, leaner runners excel in warm climates, while stockier builds fare better in colder climates.
Researchers at Anglia Ruskin University found that a portable breath test can detect changes in metabolism in response to diet. The study used the Lumen device to monitor metabolic fuel use at home and showed that it could detect acute changes in carbohydrate use, but was not sensitive on a day-to-day basis.
Studies found that certain T cells in human blood can produce acetylcholine, regulating blood pressure and inflammation. Higher levels of these immune cells were associated with reduced risk of death in seriously ill patients.
A study published by the European Association of Urology defines 'growers' and 'showers' as men whose penises increase in size by more than 56% when erect, compared to flaccid states. The researchers found that most men fell into a 'grey zone', with only 24% classified as growers and 25% as showers.
A recent study published in Current Biology found that the human body can predict regular mealtimes based on physiological changes. The research team discovered that daily blood glucose rhythms may be driven by both meal size and timing, suggesting a physiological drive for some people to eat at certain times.
Researchers at the University of Colorado Boulder reenacted an ancient trek using logs on their heads, inspired by sherpas in Nepal. The team found that simple devices called tumplines enabled them to carry heavy loads over longer distances without getting fatigued.
A team of leading experts in reproductive biology, microbiome science, and immunology found that the concept of a foetal microbiome is inaccurate. The detection of microbiomes in foetal tissues was attributed to contamination during vaginal delivery, clinical procedures, or laboratory analysis.
Researchers found that female patients with diffuse large B-cell lymphoma treated in the afternoon had reduced mortality rates and cancer recurrence compared to those treated in the morning. The study suggests that timing chemotherapy delivery according to an individual's circadian clock may improve treatment outcomes.
A systematic review and meta-analysis found common risk factors for primary dysmenorrhea and premenstrual syndrome, including physical characteristics, menstrual characteristics, and lifestyle factors. Lifestyle changes such as maintaining regular sleep patterns, a healthy BMI, and stress management may help alleviate symptoms.
Recent studies investigate heat waves and cold exposure on the cardiovascular system, revealing physiological responses that can lead to cardiovascular problems. Mild heat waves cause an increase in core temperature, skin blood flow, and vascular resistance, while mild cold exposure causes a similar rise in blood pressure.
Astronauts in space can lose up to 20% of muscle mass after two weeks due to microgravity. Researchers are exploring the use of extracellular vesicles, which contain restorative chemicals, to trigger post-exercise recovery without traditional exercise.
A new bioreactor system developed by KAUST scientists delivers gases to maintain physiological environments, reducing unpredictable shifts in cell growth. The system allows for more accurate and reproducible experiments in biomedical research.
ISB researchers found that the gut microbiome is responsible for variation in circulating blood metabolites across people. The study examined 930 blood metabolites and found that over 60% were associated with either host genetics or the gut microbiome.
A large-scale Australian study found that highly processed and refined foods are the primary contributor to rising obesity rates. The 'Protein Leverage Hypothesis' suggests that people overeat fats and carbohydrates due to their strong appetite for protein, leading to an increased risk of chronic disease.
The HUSH complex is involved in normal brain development, neuronal individuality, and connectivity. The complex also regulates repetitive-like gene clusters, including protocadherin gene clusters, which are essential for neuron-to-neuron interactions.
Researchers at Oregon Health & Science University have counted more than 10,000 nerve fibers in the human clitoris, exceeding previous estimates of 8,000. This discovery could lead to better outcomes for phalloplasty surgery and improved sensation for transmasculine patients.