Articles tagged with Hormones
A new study found that women whose menstrual cycle length increased two years before menopause had better vascular health than those with stable cycles. Changes in cycle length may predict cardiovascular disease risk, allowing clinicians to recommend preventive strategies.
A study published in The Journal of Sex Research found that higher testosterone levels are associated with having multiple partners in men and solitary sexual activity in women. The research, which analyzed data from nearly 4,000 adults, highlights the complex relationship between hormones and human sexuality.
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.
Researchers at UT Southwestern Medical Center discovered a gene linked to eczema that regulates sex hormones and skin lipid production. The study suggests that targeting this gene could provide relief for patients with eczema by increasing sebum production.
Chronic light exposure disrupts circadian rhythms in rats, leading to memory deficits and amyloid β accumulation similar to Alzheimer's disease. Fluoxetine treatment prevents these effects, suggesting a potential therapeutic strategy.
Researchers found that a gene called REST is crucial for boosting insulin-producing cells during early pancreas development. Inactivating this gene increased the number of insulin-producing cells, which were maintained into adulthood in mice.
Researchers found that pituitary hormone ß-endorphin and Arg-vasopressin contribute to movement impairments on the opposite side of the body after a brain injury. Blocking these hormones may help treat movement problems following stroke or injury, targeting left and right sides differently.
Researchers found that stronger early-life social connections and maternal care correspond to lower adult stress hormone levels and fewer DNA modifications. This study suggests that early experiences have a lasting impact on health and stress response in wild animals.
Researchers at RUDN University have discovered a new three-component reaction that results in the synthesis of acetimidamides, heterocyclic compounds with biological activity. The reaction reaches an efficiency of up to 96% and can be used for the synthesis of hormones, anti-inflammatory drugs, and other medical substances.
Researchers have developed a new method to rapidly monitor snow leopard stress levels in the wild using widely available equipment. The method extracts hormones from faecal samples and analyzes them on-site, allowing for quick and easy assessment of stress status.
Researchers found that castration of male sheep leads to delayed DNA aging compared to intact males, with epigenetic clocks and DNA methylation patterns differing between the two groups. The study's findings also suggest a link between castration, male hormones, and sex-specific differences in DNA aging.
A Rutgers-led team developed a microchip that can measure cortisol and other stress hormones in real-time from a single drop of blood, providing patients with timely feedback for better treatment. The miniaturized device has the potential to be used for non-invasive cortisol measurement in other fluids.
Female fruit flies undergo a behavioral change after mating, becoming more selective towards males with higher levels of aphrodisiac pheromone. This preference is induced by the juvenile hormone and reduces their sensitivity to pheromones, leading them to prefer males with more attractive scents.
A recent study by the National Food Institute found that clotrimazole, an over-the-counter fungicide, can significantly alter sex hormones in pregnant rats and their developing fetuses. This exposure was observed at concentrations comparable to those experienced by human mothers taking clotrimazole to treat vaginal thrush. The research...
A study examining COVID-19 severity found associations between circulating sex hormones and disease outcomes in patients, highlighting the need for further research on hormonal factors. The investigation, published in JAMA Network Open, suggests that hormonal imbalances may contribute to varying levels of disease severity.
Researchers discovered that clownfish develop white stripes faster in giant carpet anemone hosts due to higher levels of thyroid hormones and increased duox gene activity. Thyroid hormone levels correlate with duox expression, leading to faster bar formation in giant carpet anemone clownfish.
Clownfish develop white stripes during metamorphosis, with varying rates of formation depending on the sea anemone host. Thyroid hormone influences white bar development, with higher concentrations leading to more bars and earlier development.
Researchers have identified two subtypes of POMC neurons with distinct hormone sensing and appetite suppression profiles. The findings suggest that the diversity of these neurons is crucial for their function in regulating metabolism.
A large survey of women in California found significant racial and ethnic differences in personal care product use, with Black women more heavily exposed to endocrine-disrupting chemicals. The study aims to fill the gap in data on products used by women of color and informs guidance for self-protection and policy development.
Researchers at the University of Copenhagen have discovered a better way to target and eliminate beetles using eco-friendly methods. The study found that beetles regulate their kidney function in a unique way, which can be exploited to disrupt their fluid balance without harming other insects.
Scientists have discovered how a unique molecular switch in the brain causes feelings of fullness and may help develop improved anti-obesity drugs. The melanocortin receptor 4 is activated by setmelanotide, which binds to its binding pocket and enhances binding with calcium ions.
Women with bulimia nervosa performed worse on a task requiring self-control when stressed, but not those with anorexia nervosa. Brain activity differences were observed between the two groups when stressed, with women with bulimia showing impaired pre-emptive slowing down.
A study in red-haired mice reveals that a variant of the melanocortin 1 receptor affects pain sensitivity. The researchers found that lower levels of certain hormones lead to more opioid signals, elevating the pain threshold.
A new study has found a link between early exposure to flame retardants and an increased risk of premature birth in pregnant women. Women with high levels of polybrominated diphenyl ethers (PBDEs) in their blood were more likely to deliver their babies early, with no such association seen for those with lower exposure levels.
A new study reveals that higher ghrelin levels in healthy females predict a greater preference for smaller immediate monetary rewards over larger delayed financial rewards. This indicates more impulsive choices, contradicting previous research findings in rodents suggesting a similar effect.
A study published in ENDO 2021 found that children with adrenal insufficiency are at a significantly higher risk of severe COVID-19 complications due to impaired cortisol production. The researchers analyzed data from over 846 children with the condition, revealing a mortality rate 10 times higher than in children without adrenal disease.
A recent study found that nearly one-third of adults over 65 taking thyroid hormone also use medications known to interfere with thyroid function tests. The study highlights the complexity of managing thyroid hormone replacement in older adults, who often take multiple medications for other conditions.
Thyroid hormone doesn't operate as a straight-on/off switch but rather shifts the balance between gene activity, revealing a more nuanced mechanism of action. This discovery has significant implications for understanding metabolic diseases and developing targeted therapies.
A wearable sensor developed by EPFL's Nanolab and Xsensio measures cortisol levels in sweat to detect signs of burnout, providing a non-invasive and precise way to quantify stress levels. This innovation has the potential to revolutionize the study of physiological rhythms and the treatment of stress-related diseases.
A recent study published in Maturitas found that UV-radiation can affect the levels of oestrogens and gonadotropins in postmenopausal women, increasing the risk of osteoporosis, cardiac diseases, and neurodegenerative diseases. Researchers recommend carefully monitoring sun exposure to prevent harm.
Researchers found that high cortisol concentrations in newborn fawns were associated with lower survival rates. Cortisol levels varied between study areas, suggesting other environmental factors may influence mortality rates.
A recent NIH study found that women who use cannabis while trying to conceive are around 40% less likely to get pregnant each month. The study of over 1,200 women aged 18-40 with one or two miscarriages found no difference in miscarriage rates but noted differences in reproductive hormones involved in ovulation.
Researchers at Shinshu University discovered that silkworms use thermal information to determine when to lay dormant eggs. The neuropeptide corazonin plays a key role in regulating this process, and its release is controlled by GABA neurotransmission.
A recent study published by The Endocrine Society found that consuming drinks with sucrose can lead to lower levels of appetite-regulating hormones compared to glucose. The researchers discovered that individual characteristics, such as body weight and sex, also affect hormone responses to different types of sugar.
A multicentre study found a strong correlation between thyroid function and Takotsubo cardiomyopathy, a condition triggered by extreme emotional stress. The research identified two distinct mechanisms: an overactive thyroid gland promoting heart disease risk and an elevated target value of thyroid regulation related to the stress event.
Researchers at University of California - San Diego found a connection between gut bacteria diversity and active vitamin D levels in older men. The study suggests that microbiome diversity is closely associated with active vitamin D, while the precursor form has no significant link.
A new study led by Penn State researchers found a link between the number of times a person gives birth and their physical aging process. The study discovered that people who had few or many births showed signs of quicker biological aging compared to those who had given birth three or four times. The effects were only visible after men...
A new study published in eLife suggests that Lipocalin-2, a hormone produced by bone cells, could be used to treat people with obesity. The hormone has been shown to suppress food intake and increase feelings of fullness in mice and non-human primates.
The Hormones: The Inside Story podcast series explores the facts behind hormones and their impact on daily life, sleep, stress, body fat, fertility, and more. It cuts through myths and misinformation with expert-led science, empowering listeners to make informed decisions about their health.
The Endocrine Society's virtual annual meeting, ENDO 2021, offers journalists the opportunity to discuss groundbreaking research with world-renowned experts in diverse fields. The event features over 70 live sessions, 20 oral sessions, and six plenaries, covering topics such as diabetes, obesity, reproductive health, and more.
A new study finds that a drug called MVT-602 can improve fertility in women with reproductive health problems by targeting the kisspeptin hormone system. The drug's longer duration of action allows for less frequent dosing, offering improved treatment options for conditions such as polycystic ovary syndrome and hypothalamic amenorrhea.
A new study found that prenatal exposure to maternal thyroid hormones can result in longer telomeres in chicks, making them appear younger at birth. This could have significant implications for understanding the effects of telomere length on aging and mortality risk.
About 9% of trans adults in the US access hormones from non-licensed sources, posing health and safety risks. Lack of insurance coverage is a top issue affecting transgender people, ranked second only to direct violence.
A recent study found that maternal body condition and stress hormone levels can affect the traits of jacky dragon offspring, including gender and growth rate. The research suggests that thermal opportunity may play a role in conveying environmental information from mother to offspring.
A Michigan Medicine-led study finds that nearly 170,000 underinsured transgender Americans access hormones from non-licensed sources, posing health risks. The study highlights the need for improved insurance coverage and access to gender-affirming hormone therapy.
A recent study by ETH Zurich researchers found that workplace interruptions lead to increased cortisol levels and physical stress. Participants who received chat messages from superiors during a task reported better emotional and cognitive responses to stress.
A new study published in HortScience found that the commonly used rooting hormone IBA has no effect on cycad propagation, contrary to previous research. The study's findings highlight the need for further research on cycads and could improve conservation efforts in countries where commercial IBA products are difficult to obtain.
Researchers have identified phosphorus-containing compounds as markers for thyroid hormone action in tissue using non-invasive magnetic resonance spectroscopy. This allows for the measurement of hormone action in different areas of the body, potentially improving care for patients with thyroid dysfunction.
A USC study found that the hunger hormone ghrelin affects animals' eating frequency and memory. Rats with disrupted ghrelin signaling to the vagus nerve ate more frequently and gained weight, indicating impaired episodic memory.
Cats that eat one meal a day are more satisfied, with higher post-meal levels of appetite-regulating hormones. This feeding schedule also promotes lean body mass by increasing blood amino acids.
Researchers found that irisin altered the expression of genes regulating ACE-2, a key protein in viral entry. Irisin also tripled levels of TRIB3 transcription, which has been linked to lower replication of SARS-CoV-2. The study suggests irisin's therapeutic potential for COVID-19 treatment.
The Endocrine Society will hold ENDO 2021 in a fully virtual format from March 20-23, 2021. This decision follows the impact of COVID-19 on global events, while maintaining key elements of the meeting, including educational programming and networking opportunities.
A new study by Michigan State University researchers connects specific hormones present before and after birth with immune response and lifelong immunological disease development. Females are at increased risk for common diseases like asthma, allergies, and irritable bowel syndrome due to their perinatal hormone levels.
Researchers found a biological switch in the pituitary gland that enables animals to adapt to changing seasons, governed by hormones and genes. The study reveals a crucial role of the circadian gene BMAL2 in seasonal adaptations, shedding light on the underlying processes.
A recent study published in JAMA Network Open found that trauma-exposed adolescents with moderately elevated acyl-ghrelin hormone levels are almost eight times more likely to develop post-traumatic stress disorder (PTSD). The study also suggests that lower acyl-ghrelin levels may reduce the risk and severity of subsequent PTSD.
Research examines neuroendocrine effects of grief, finding elevated cortisol levels in bereaved individuals with possible long-term health consequences. The study calls for more research on potential markers of neuroendocrine activity associated with grief to inform tailored interventions.
Researchers developed a new method to estimate the health risks of PFAS in drinking water. The study found that women are particularly at risk of decreased thyroid hormone T3 levels due to exposure. Around 4% of local women in Ronneby, Sweden, may experience a 10% drop in T3 levels.
A new study detects biologically relevant AMH levels in human hair samples, which strongly correlate with serum levels and AFC. The results suggest a non-invasive test of ovarian reserve using hair samples may be more accurate and cost-effective than traditional blood tests.
A new approach has been developed to stimulate the production of antibiotics and antiparasitic compounds in actinobacteria. By exposing bacteria to specific hormones, researchers hope to produce large quantities of medically useful molecules.