Articles tagged with Hormones
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A study by Concordia University researchers found that optimists tend to have more stable cortisol levels, indicating better regulation of stress. In contrast, pessimists struggle to control their stress response, especially during high-stress situations.
Research links perfluorinated chemical (PFC) exposure to changes in thyroid function, particularly in women, with elevated levels of T3 and T4 hormones. PFCs found in various products may increase the risk of mild hypothyroidism without triggering a natural hormonal response.
Researchers found that Arg-Phe-amide-related peptide-1 modulates the hypothalamus-pituitary-gonadal axis by inhibiting kisspeptin-activated gonadotropin-releasing hormone neurons. The study also revealed a potential role for gonadotropin-inhibitory hormone in regulating reproductive development.
Research suggests that simultaneous boosting of these hormones can reduce appetite, fat gain, and insulin-resistance in mice. The double-barreled approach stimulates complementary brain regions and nerve pathways, leading to a powerful combined effect.
Researchers found that vitamin D deficiency is linked to early onset of puberty in girls, with 44% having severe deficiencies. Vitamin D supplementation may help delay pubertal onset and progression.
A clinical study found that kisspeptin effectively induces egg maturation in women undergoing IVF treatment, reducing the risk of ovarian hyperstimulation syndrome. The hormone triggers natural reproductive hormone release, resulting in healthy babies.
A new observational study found that overweight and obese men secrete greater amounts of stress hormones after eating. Cortisol levels increased by 51% in the overweight group compared to 5% in the normal-weight group.
A new study has identified corticosterone as a potential biomarker of fetal stress during labor and delivery. Corticosterone concentrations increased by 148% compared to cortisol, suggesting that it may serve as an indicator of infant distress.
A study published in PLOS ONE found that healthy, full-term babies secrete higher levels of corticosterone during labor and delivery compared to their mothers. Corticosterone concentrations increased with fetal distress and were linked to the method of delivery, with vaginally delivered infants producing more cortisol.
Researchers found that children who appear to succeed socially may be failing biologically due to chronic stress. Those with high self-esteem and academic success show elevated levels of stress hormones, blood pressure, and BMI, increasing risk for chronic diseases.
A recent study found that practicing meditation and stretching can help relieve PTSD symptoms in nurses by regulating stress hormone levels. Cortisol levels responded favorably to mind-body exercises, decreasing PTSD symptoms by 41% in those who participated.
Researchers found that fetuses produce a hormone called adrenomedullin, which protects mothers from preeclampsia. This discovery could lead to new methods for detecting and preventing the condition.
Research by NC State University scientists found pesticide exposure causes more male offspring and reproductive problems in female Daphnia, a keystone species impacting population dynamics. Exposure levels as low as 71 nanograms per liter had significant impacts on reproductive health.
A recent study found that long-term cortisol exposure in seniors is associated with an increased risk of heart disease and stroke. The study used scalp hair analysis to measure cortisol levels over a three-month period, revealing a clear link between chronically elevated cortisol levels and cardiovascular disease.
A monkey study by the University of Manchester and Liverpool has found that middle-ranking macaques experience high levels of social stress due to conflicts with both lower- and higher-ranking individuals. The research suggests a possible application to human hierarchies, particularly in workplace settings.
Research from the Shamatha Project at UC Davis suggests that mindfulness training can lower cortisol levels, a hormone associated with physical and emotional stress. The study found a correlation between high scores in mindfulness and low cortisol levels before and after an intensive meditation retreat.
A new model developed by researchers at UCLA uses hormone levels to estimate when the final menstrual period will occur in menopausal women. This could help identify accelerated bone loss and increased cardiovascular risk in the year leading up to the final menstrual period.
Researchers used hormone levels to estimate when a woman will have her final menstrual period, providing a way to gauge menopause-related bone loss. The study found that levels of estradiol and follicle stimulating hormone can predict the timeline for menopause.
A new educational tool has demonstrated significant reduction in stress hormones and depressive symptoms among adolescents transitioning to high school. The DeStress for Success Program showed improved mental health outcomes, especially among students with initial high anger levels.
A recent study found that sedentary children experience stress hormone surges when exposed to everyday stressors, while the most active children had little or no increase in cortisol levels. The study suggests physical activity plays a role in mental health by buffering children from daily stressors.
A study published in the Journal of Translational Medicine found that thyroid hormone treatment reduced loss of heart muscle cells and improved heart function in rats after a heart attack. The researchers believe this could lead to improved patient outcomes and significant healthcare savings.
Researchers discovered that metal ions cobalt, manganese, and magnesium control the production of different terpenoids in insect larvae, one for defense and another for juvenile hormones. This study highlights the importance of metal ions in regulating metabolic pathways and challenges the traditional view of enzyme specificity.
A study found that morning sickness lasting all day is often linked to hormonal and genetic factors, with ethnicity and diet also playing a role. Women who have experienced hyperemesis gravidarum in previous pregnancies are at higher risk of severe nausea during subsequent pregnancies.
Researchers propose a new approach to designing diets by focusing on the impact of food's micronutrients, rather than macronutrients. This approach aims to reduce disease and promote wellness by 'listening' to the body's response to specific nutrients.
A recent study found that women with high anti-Müllerian hormone (AMH) levels are 2.5 times more likely to have a successful IVF cycle than those with low levels. High AMH levels also signal increased chances of pregnancy and live birth, regardless of the number of eggs retrieved.
A new study in humans published by Cell Press reveals that sodium levels actually fluctuate rhythmically over the course of weeks, independent of salt intake. The study, which examined cosmonauts participating in space-flight simulation studies, challenges widely accepted assumptions about sodium balance.
Scientists have identified a new type of nerve cell in the brain that regulates heart rhythm and blood pressure. The discovery may lead to new ways of treating cardiovascular diseases.
Research suggests that bacteria in the gut may control host appetites by influencing signaling pathways. The gut microbiota respond to nutrients and hormones, generating compounds that affect appetite and mood disorders. Further studies are needed to determine if gut bacteria directly influence food choice.
Researchers at King's College London identified the 'Hedgehog pathway' regulating stress hormones and brain cell development. The study revealed that inhibiting this pathway can reverse damaging effects of stress hormones on brain cells, offering new potential mechanisms to target depression.
A peer-reviewed study found that most houses have levels of at least one flame retardant exceeding federal health guidelines, with hormone disruptors, carcinogens, and chemicals of unknown safety profiles detected. The study highlights the need for safer alternatives to phase out hazardous chemicals.
A study conducted by Elizabeth Nedstrand and Lotta Lindh-Åstrand found that applied relaxation therapy reduced hot flushes in postmenopausal women by half. The treatment also showed improvements in quality of life, particularly in memory, concentration, sleep, and anxiety.
A new study by UC Berkeley researchers links plant-based estrogenic compounds to altered hormone levels and possible changes in behavior among male red colobus monkeys. The study suggests that phytoestrogens may have played a significant role in the evolution of primate biology, including human biology.
Researchers at McGill University have identified a new hereditary form of hypothyroidism caused by mutations in the immunoglobulin superfamily, member 1 (IGSF1) gene. This sex-biased condition affects males more frequently than females and has significant implications for thyroid hormone deficiency diagnosis and treatment.
A study from Lund University finds a strong link between neurotensin, a satiation hormone, and the risk of type 2 diabetes, cardiovascular disease, and breast cancer in women. Obesity is not the primary explanation for this connection.
A new study by researchers at the University of California, Berkeley, found that BPA exposure is associated with changes in thyroid hormone levels in pregnant women and newborn boys. The study suggests a potential link between BPA exposure and altered fetal development and cognitive function.
A new study by The Endocrine Society reveals that low levels of vitamin D are associated with increased mortality in African American and Caucasian older adults. Vitamin D insufficiency was found to be common among African Americans, and its impact on remediating low levels may be greater for this population.
Researchers discovered FNDC5/irisin hormone is secreted by muscle cells and reflects muscle mass. Irisin levels increase after acute exercise and are associated with growth factors that promote muscle growth.
A study of noble Korean males found castrated eunuchs lived 14-19 years longer than other men. The incidence of centenarians among Korean eunuchs is 130 times greater than in developed countries, offering clues to life extension.
A recent study published by The Endocrine Society found that mildly elevated TSH levels in the elderly do not increase mortality risk. In fact, having subclinical hypothyroidism may be protective, and higher thyroid hormone levels are associated with a higher risk of death.
A study from the University of Leeds found that seabirds control when their young leave home through hormone levels corticosterone, not parental care. Chicks show a surge in this hormone 60 days before fledging, prompting parents to reduce food provisioning.
A new study shows that ovarian grafts can maintain hormonal function for more than seven years in some women, providing a long-term solution for fertility preservation. This breakthrough could benefit young cancer survivors with premature ovarian failure, enabling them to retain reproductive health for an extended period.
The Endocrine Society proposes a streamlined definition for EDCs and offers recommendations to strengthen current screening programs. The new statement outlines key issues related to identifying EDCs and protecting against adverse effects.
Researchers discovered a key brain receptor that regulates gastric emptying and food intake. Mice lacking this receptor showed accelerated obesity and faster food consumption.
Researchers found that patients treated with hormonal therapy and rehabilitation outperformed those with rehab alone on functioning and reasoning tests. Relaxin has been shown to have a tremendous promise in treating and preventing heart and blood vessel diseases.
A new study suggests that ghrelin increases the incentive for humans to eat high-calorie foods, even when already full. Rats without the ghrelin receptor gene ate less sweet treat after a meal compared to those with the intact gene.
A new study presents promising results for an investigational parathyroid hormone replacement in treating hypoparathyroidism, a rare disorder marked by low calcium and high phosphate levels. The treatment effectively regulated calcium levels and reduced the need for additional vitamin D in over half of patients.
A new study found that even mild thyroid dysfunction during early pregnancy significantly increases the risk of serious complications, including miscarriage, stillbirth, and low birth weight. The study recommends universal screening for all pregnant women in the first trimester to prevent these complications.
Weekly fertility hormone injections are as safe and effective as standard daily injections in increasing pregnancies and minimizing serious side effects. Women undergoing fertility treatment may prefer weekly injections for their patient-friendly nature.
A comprehensive review by Charlene Krejci found female hormones fluctuate throughout women's lives, allowing bacteria to grow and exacerbate conditions like bone loss and pre-term births. Women need to be vigilant about maintaining healthy teeth and gums to prevent or lessen severity of these health issues.
A hormone previously associated with calcium homeostasis boosts immune response when dietary vitamin D levels are inadequate. The discovery may provide an alternative to current antibiotic therapies for treating skin infections.
Research by UTSA College of Business professor Kristina Durante reveals that women's perceptions of men as potential fathers are influenced by hormonal fluctuations during ovulation. Women tend to overestimate the domestic contributions of sexy cads and underestimate those of reliable dads.
A recent study suggests that pleasure eating can activate the body's reward system, leading to overeating. Researchers found that the hormone ghrelin and chemical compounds like 2-arachidonoylglycerol increased during hedonic eating, overriding the body's signal that enough has been eaten.
A study found that stressed lizard mothers gave birth to smaller, but healthier, offspring with larger fat reserves, which may enhance their survival in a post-natal stressful world. Stressed mothers themselves were also more physically fit after giving birth, prioritizing self-preservation.
A recent study found that low doses of endocrine-disrupting chemicals can result in significant health effects, contradicting current testing paradigms. Researchers recommend expanded and generalized safety testing to detect potential adverse effects of these chemicals.
Researchers found that female mice exposed to very high doses of phthalates develop significant reproductive alterations and precancerous lesions as they grow up. The study provides new insights into how these chemicals affect developing female reproductive systems, with the potential for long-term health effects.
Research reveals that BRG1 gene mutations render tumor cells unresponsive to hormones like retinoic acid and steroids, leading to continued growth and spreading.
Increasing age is associated with a higher risk of death from breast cancer in postmenopausal women, particularly those over 75 years old. The study found that disease-specific mortality increases with age, even after accounting for other factors, suggesting possible undertreatment as an underlying mechanism.
A diet high in fiber, such as whole grains and legumes, reduces markers of inflammation by 22% in overweight adults. The diet also increases a hormone that regulates metabolism, providing a clinically useful strategy for reducing chronic disease risk.
A study found significant gene expression patterns among tumor samples that correlated with distant metastatic disease development. These patterns may help personalize treatment and predict which patients are likely to recur early or late.
The vasodilator hormone relaxin improved kidney function and blood flow in lab rats with polycystic kidney disease (PKD), a life-threatening genetic disorder. Relaxin also reduced the size of fluid-filled cysts and lowered collagen scores, indicating slowed scar formation.