Articles tagged with Hormones
Researchers found that a specific COMT gene variant is associated with higher cortisol levels in stressed Japanese macaques, leading to more aggressive behavior. This study provides insight into the genetic basis of stress hormone production in non-human primates and its potential connections to human behavior.
A Michigan State University study found that too much FSH decreases a woman's chances of having a baby, reversing traditional thought on hormone use during IVF. The live birth rate decreased by as much as 15-20% with high FSH doses, regardless of age or treatment length.
A NOAA-led team found that only 20% of pregnant dolphins in Barataria Bay gave birth to healthy calves, compared to an 83% success rate in a similar population. The study also revealed high rates of reproductive failure and death among dolphins exposed to oil from the Deepwater Horizon spill.
A preliminary study suggests that taking vitamin D supplements daily can improve exercise performance by increasing cycling distance and reducing physical exertion signs. The study also found lower blood pressure and cortisol levels in participants, indicating a potential link between vitamin D and cardiovascular health.
Takashi Yoshimura, a professor at Nagoya University, has made outstanding contributions to thyroid hormone research. His discoveries on seasonal reproduction in birds, mammals, and fish are expected to advance human reproductive health and mood disorders related to seasonal changes.
A new animal study published in the American Journal of Physiology found that a low dose of thyroid hormone improved cardiac tissue and function in female rats with high blood pressure. The treatment safely restored normal thyroid hormone levels and prevented scar tissue accumulation, leading to overall improvement in heart function.
Researchers identified calcium channel blockers and antibodies blocking IL-17A as potential treatments for parathyroid hormone-driven bone loss. Elevated levels of IL-17A are seen in autoimmune diseases like psoriasis, rheumatoid arthritis, and Crohn's disease, which sometimes involve bone loss as a secondary symptom.
Researchers have identified kisspeptin neurons as the key players in generating episodic hormone pulses crucial to normal reproductive functioning. These findings hold promise for developing new fertility treatments targeting brain circuitry disorders, which contribute to up to one-third of all infertility cases.
A national survey reveals that nearly a third of US women taking hormones at menopause are using unapproved and untested compounded hormones. The study found four cases of endometrial cancer among these users, highlighting the risks associated with these therapies.
Researchers found that burrowing owls colonizing cities exhibit the same levels of stress as rural populations, suggesting a high tolerance to human disturbances. Urban individuals with intermediate levels of corticosterone hormone have better survival rates.
Researchers at Northwestern University found that discrimination during adolescence can have a lasting impact on cortisol levels, leading to flatter diurnal rhythms and increased risk of fatigue, mental health issues, and cardiovascular disease. The study suggests that cumulative experiences of discrimination, particularly during adole...
A saliva test for stress hormone cortisol may identify healthy older adults at risk of cognitive decline, with higher evening cortisol levels linked to smaller brain volume and poor memory skills. The study suggests a potential link between cortisol's toxic effect on the hippocampus and dementia risk.
The National Institutes of Health has awarded a five-year, multicenter study to evaluate the long-term outcomes of medical treatment for transgender youth. The study will examine the physiological and psychosocial impact of hormone blockers and cross-sex hormones on this population.
Robson Santos will focus on the analysis of alamandine's functions in cardiovascular disease. He recently discovered the hormone as part of his collaboration with Professor Michael Bader at the MDC.
A new Rutgers University study found that a hormone deficiency in the brain can lead to overeating and a preference for high-fat food. Researchers discovered that reducing glucagon-like peptide-1 (GLP-1) in the central nervous system caused mice to consume more calories and show an increased preference for high-fat foods.
Research reveals that salicylic acid shapes the microbial community at a plant's root by keeping certain families of bacteria out and letting others in. The hormone also recruits desirable bacterial families, a discovery that could lead to increased plant productivity.
A 30-year study of 4,941 thyroid cancer patients found that moderate TSH suppression can bring benefits comparable to more extreme approaches, with potentially fewer side effects. The research supports a shift towards more tailored hormone suppression strategies for high-risk patients.
A recent study by Kelly Klump at Michigan State University reveals that ovarian hormones influence eating disorders in women by turning genetic risk on and off. Changes in hormone levels drive increases in binge eating and emotional eating across the menstrual cycle.
A new study from Lund University found a significant correlation between low levels of the anti-stress hormone enkephalin and an increased risk of breast cancer. Women with the lowest levels of the hormone had a risk more than three times that of those with the highest levels.
Researchers say that daily intake of more than three times the recommended minimum is needed to restore a healthy blood level of vitamin D in overweight or obese blacks. Higher doses were found to be more effective at suppressing parathyroid hormone and improving bone health.
Researchers at Salk Institute find that a high-fat diet amplifies the effects of FGF21, granting mice resistance to obesity and associated diseases. The study provides insight into potential new therapies for mitochondrial and metabolic diseases in humans.
Women under chronic stress have significantly lower levels of klotho, a hormone that regulates aging and enhances cognition. The study found even lower levels of klotho in women with clinically significant depressive symptoms, suggesting a link between psychological influences and klotho.
A large analysis found that subclinical hyperthyroidism is associated with an increased risk of hip and other fractures, including spine. The study pooled data from over 70,000 participants and found no association between subclinical hypothyroidism and fractures.
A study found that 2 out of 10 plastic teethers contained significant endocrine activity, including methylparaben and unidentified compounds. The presence of parabens in one product is unusual, highlighting the need for manufacturers and regulators to address chemical exposure in baby products.
Scientists design a peptide that binds to ghrelin and Y2 receptors, reducing appetite in obese mice. The compound shows promise as an obesity treatment targeting the complex system of hormones regulating appetite.
A team of scientists is working on a project to create new pesticides that target specific insect species without harming beneficial ones. By mimicking the hormone systems of these insects, researchers hope to disrupt their reproductive cycles and prevent population explosions.
A study discovered that smoking can raise the likelihood of producing twins in women with certain genetic backgrounds, particularly those with a variant in the TP53 gene. The researchers found significant interactions between smoking and genetic variations, suggesting a possible explanation for reports of mothers of twins being more li...
Michigan State University researchers are investigating whether belly fat hormones cause high blood pressure by communicating with blood vessels in the abdomen. Visceral fat, a harmful type of fat that surrounds organs and blood vessels, is believed to play a key role in this process.
UGA researchers have identified a hormone receptor that plays a key role in regulating female mosquito reproduction, enabling them to produce eggs after consuming blood. The discovery fills a major gap in understanding how mosquitoes reproduce and could potentially lead to strategies for controlling mosquito populations.
Recent research suggests that irisin, believed to travel from muscle to fat tissue after exercise, may not exist in humans. New tests used in previous studies found antibodies were poorly vetted and nonspecific, leading to false positive results.
Research found that exposure to phthalates early in pregnancy disrupts essential pregnancy hormone levels, leading to adverse effects on male genital development. Higher phthalate levels were linked to lower hCG levels and shorter anogenital distance in male babies.
A BBC News team received the Endocrine Society's Award for Excellence in Science and Medical Journalism for their coverage of hormonal fluctuations at different times of day. The winning package, 'The Day of the Body Clock,' included TV, radio, and online coverage from May 13, 2014.
Researchers found that pregnant lemur moms carrying boys produce simpler scents with fewer odor compounds compared to those carrying girls. The change in scent patterns correlates with changes in blood hormone levels. The study provides the first evidence of a pregnant mother's scent differing depending on the sex of her baby.
Researchers at the Technische Universität Dresden have successfully transplanted adrenal cells encapsulated in a bioreactor, paving the way for future human transplantation. This breakthrough could benefit patients with adrenal insufficiency and congenital diseases such as 21-hydroxylase deficiency.
Researchers at USC discovered a compound that extends the life span of female fruit flies by 68%, challenging existing methods used to study genetic causes of aging. The finding opens up new avenues for investigating longevity and identifies potential candidate genes and mechanisms.
Researchers have found that ghrelin increases sexual activity and motivation in mice, suggesting a possible role for the hormone in regulating human sexuality. Further research is needed to understand the effects of ghrelin on humans, but ghrelin inhibitors may hold promise as new treatments for sex addiction.
Researchers successfully mutated the thyroid hormone receptor in tadpoles, disrupting hind limb development and providing insight into the importance of hormones in early development. The study also has potential applications in understanding human developmental disorders such as cretinism.
A new study reveals that ghrelin, a key regulator of appetite, plays an unexpected role in early brain development and influences long-term appetite regulation. The research suggests a link between gut-brain axis maturation and later susceptibility to obesity, diabetes, and cardiovascular disease.
Researchers discovered that knocking down a single gene can prevent stress-induced female infertility and miscarriage in rats. The study found that this genetic silencing restored reproductive success to levels comparable to non-stress controls.
A new NYIT study reveals that rats treated with thyroid hormones had a reduced risk of developing dangerous heart arrhythmias following a heart attack. The findings could have important implications for future treatment of human patients with heart failure, who often suffer from atrial fibrillation.
A new study found that endocrine disrupting chemicals can interfere with thyroid hormone action in pregnant women and may travel across the placenta to affect fetal brain development. The study used a prospective birth cohort of 164 pregnant women and found associations between high levels of CYP1A1 enzyme and thyroid disruption.
Scientists have discovered the role of thyroid hormone in the formation of zebrafish stripes and have found that cells responsible for producing orange color can transform into xanthophores through a process called 'transdifferentiation'. This finding could provide clues to regeneration of tissues and organs without stem cells.
A study found that thermal receipt paper can transfer high amounts of BPA to hands and blood levels after handling, particularly in women. This raises concerns about the potential health risks associated with prolonged exposure to BPA through daily activities.
A new study found that PCBs can infiltrate the placenta during pregnancy and affect thyroid hormone activity at the cellular level. This may be particularly concerning for pregnant women who smoke, as it can lead to higher levels of the enzyme CYP1A1 in the placental tissue.
Researchers identify a bacterial protein that mimics the satiety hormone, leading to variations in food intake. A blood test for this protein could lead to specific treatments for eating disorders, while neutralizing the protein may prevent dysregulation of food intake.
A study published in CMAJ found that metformin increases the risk of low thyroid-stimulating hormone levels in patients with hypothyroidism. Metformin monotherapy was associated with a 55% increased risk of low TSH levels compared to sulfonylurea therapy.
The study found that younger people have a more robust immune response to grief, while elderly people are more likely to experience reduced immune function. The researchers suggest that hormonal supplements could be used to help individuals at risk of stress, but highlight the importance of a strong support network in managing grief.
A study published at Lund University found that spinach extract containing thylakoids reduces hedonic hunger by up to 95% and increases weight loss by 43%. The study showed improved appetite control, healthier eating habits, and increased weight loss in participants who took the thylakoid extract before breakfast.
Women seek anti-aging clinicians to treat menopausal symptoms, valuing personalized attention and perceived safety of bioidentical hormones. The study found that these women prioritize relieving symptoms, feeling energized, and avoiding chronic illnesses associated with aging.
A study by the Endocrine Society found that women with vitamin D deficiency were nearly half as likely to conceive through IVF as those with sufficient levels. Women with adequate vitamin D levels had higher-quality embryos and increased chances of successful implantation.
A study found that retinoblastoma protein is less active in male brain cells, leading to higher brain tumor rates and poorer survival rates. The researchers believe this discovery could lead to more effective therapies and treatments.
Researchers have successfully used kisspeptin to stimulate ovulation in women undergoing IVF treatment, reducing the risk of OHSS. Twelve babies were born after their mothers received the hormone injection, with 12 becoming pregnant and nine having healthy embryos transferred.
Levothyroxine treatment improved cognitive and learning abilities in naturally aged mice by increasing choline acetyltransferase and acetylcholine levels. The supplement also enhanced superoxide dismutase activity and synapse function, suggesting a potential therapeutic strategy for age-related cognitive deficits.
A new study by NYIT College of Osteopathic Medicine professor A. Martin Gerdes found that administering low doses of thyroid hormone can restore hormone levels in the hearts of rats with diabetes and prevent deterioration of heart function.
Cathryn Jakobson Ramin received the Endocrine Society's Award for Excellence in Science and Medical Journalism for her investigation into hormone compounding risks. Her article, 'The Hormone Hoax Thousands Fall For', found inconsistencies in hormone prescriptions across multiple pharmacies.
Researchers found that low levels of the stress hormone cortisol are strongly correlated with voting behavior, while age is also a predictor. The study suggests that biological factors can play a role in voter turnout, complementing social and demographic variables.
A recent study has found that hypothyroidism can cause impaired driving abilities, comparable to the effects of drinking alcohol. The research suggests that patients with significant hypothyroidism should avoid driving until they have been treated with thyroid hormone.
A study found that older adults have fewer taste buds, leading to higher fasting blood sugar levels and lower adiponectin levels. The researchers suggest a link between the number of taste buds and glucose metabolism during aging.
Research at the University of Iowa found a link between high cortisol levels and gradual loss of synapses in the prefrontal cortex, leading to short-term memory lapses. Elevated cortisol can cause synapse shrinkage and disappearance, particularly in older adults, potentially slowed by treatments targeting cortisol reduction.
A new study found that elevated stress hormones are associated with structural brain changes and short-term memory deficits in aged rats. The research suggests that stress may accelerate age-related cognitive decline by altering brain connections and function in the prefrontal cortex.