Articles tagged with Human Reproduction
A new study highlights how perimenopausal women's periods may become unpredictable, heavy, and cause worse premenstrual symptoms. The research suggests that improved education and support are needed to manage these changes, including extra support in the workplace, emotional support from loved ones, and access to support groups.
Researchers found that sperm flagellar waveforms are primarily influenced by viscosity rather than shear rate, promoting energy-efficient beating behavior. Sperm adjust their power generation to respond to fluid dynamics, enabling efficient swimming against the flow in high-viscosity media.
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 U of M Medical School professor has received a $3.5 million grant to develop a reproductive health curriculum for Tanzania that addresses the needs of people with disabilities. The project aims to improve healthcare services and build in-country capacity for comprehensive sexual and reproductive healthcare.
A new Cochrane review suggests that timed intercourse using urine ovulation tests can improve live birth and pregnancy rates, especially in women under 40. The study found that timing intercourse around the fertile period increased chances of successful conception by 20-28%.
A novel mitochondrial enzyme was identified as key to reproductive aging, increasing oocyte clustering with age and affecting fertility
A study published in JAMA Network Open found that many websites selling fertility tests make misleading claims about their effectiveness and limitations. The researchers called for increased regulation and oversight on the marketing of home fertility tests, which can lead to false reassurance or worry among women.
The study reveals that women physicians prioritize family building over career advancement, leading to a shift in their professional paths. Women in medicine experience significant alterations to their careers due to fertility concerns and family planning, contributing to ongoing gender disparities.
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 new AI tool can identify sperm in severely infertile men in seconds, compared to the hours it takes scientists. The algorithm improves antiquated approaches and increases the chance of a couple conceiving their own biological children while reducing stress on sperm and increasing efficiency.
A study found that more than 40% of women who froze their eggs in their 30s were able to have babies when they returned to the fertility clinic. However, many didn't return or used other fertility treatments. Women who used frozen eggs had a lower miscarriage rate compared to those using fresh eggs.
New study finds that men who suffered from mild COVID-19 have lower sperm concentrations and motility even three months after recovery. The researchers believe that the virus may cause permanent damage to male fertility, leading to long-term decline in semen quality.
The Endocrine Society will discuss emerging technology and diabetes research, including a scientific statement on hormones and aging. Researchers will share studies on various aspects of endocrinology, such as PCOS, obesity, and endocrine-disrupting chemicals.
A new study finds that midwifery care is associated with higher levels of autonomy and respect during childbirth, particularly in community settings. Midwives attended 12% of births, mostly in hospitals, while community births were more common with midwife attendance.
A new E-MOTIVE solution dramatically improves outcomes for women experiencing postpartum haemorrhage (PPH), a leading cause of maternal mortality worldwide. The study found a 60% reduction in severe bleeding and fewer blood transfusions, potentially saving thousands of lives globally.
A study from Indiana University found that internet searches for abortion- and contraception-related terms increased significantly in states with trigger laws or pre-Roe bans after the June 2022 ruling. Searches surged 61% in these states, indicating concerns about impending restrictions on reproductive care access.
A new MSU study confirms the initial estimate that 20.9% of Michigan adults do not want children, closely matching the 21.6% found in the original study. This translates to approximately 1.7 million people in Michigan and 50-60 million Americans nationwide being child-free.
A study found similar birth outcomes for same-sex lesbian couples undergoing ART compared to heterosexual couples who conceived naturally or through ART. Infertility-related factors, not reproductive treatments, contribute to higher adverse birth outcomes in ART pregnancies.
A new study has confirmed that chronic THC use can negatively impact male reproductive health, including testicular function and sperm quality. Discontinuing use of THC for at least four months can partially restore these effects, providing a critical window for family planning and conception.
A new study published in JAMA Health Forum finds that nearly half of primary care physicians treating Medicaid patients provide prescription contraception, while only 10% offer longer-acting methods like IUDs and implants. The research highlights the need for policy approaches tailored to different physician specialties to ensure acces...
A study found that gestational iron deficiency may contribute to cognitive impairments like autism, ADHD, and learning disabilities. Researchers identified a specific embryonic neuronal progenitor cell target for GID, which disrupts interneuron development.
Scientists at the Wyss Institute and Gameto develop a living, fully human ovarian organoid that supports egg cell maturation and secretes sex hormones. This technology enables the study of human ovarian biology without tissue from patients and could lead to new treatments for infertility and ovarian cancer.
Pregnant women who fast during Ramadan tend to give birth to babies with lower weights. However, this effect is reduced in women consuming a high-fat diet outside of fasting hours, according to new research.
Researchers from Osaka University have identified a protein called FER1L5 that is crucial for the acrosome reaction, allowing sperm to fertilize eggs. The study found that mice lacking FER1L5 were unable to undergo the acrosome reaction, highlighting the importance of this protein in male fertility.
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.
A large-scale study found IVF-conceived children perform similarly to spontaneously conceived peers in terms of development and education. The research, involving over 400,000 Australian kids, suggests no significant differences in school outcomes between the two groups.
Between 2017 and 2020, drug overdose mortality among pregnant and postpartum individuals rose by 81%, closely tracking overall trends in reproductive-age populations. The COVID-19 pandemic may have contributed to the surge in 2020.
A new study found that babies born below the 25th percentile for birthweight are at a higher risk of developmental concerns compared to those born in the middle range. The researchers suggest that better birthweight surveillance and support during childhood may help reduce these risks.
A US cohort study suggests that maternal acetaminophen use during pregnancy may be associated with increased risk of sleep and attentional problems in offspring at age 3. The study found a potential link between acetaminophen exposure and neurobehavioral issues in children.
A new paper provides guidance for healthcare workers on recognizing signs of reproductive coercion, which can involve psychological pressure, emotional blackmail, and physical violence. Doctors are advised to ask specific questions and establish a professional relationship with patients to gather more information and provide support.
A study by Kyoto University Professor Misao Fujita found that Japan's Act on the Safety of Regenerative Medicine lacks key provisions to prevent unproven treatments from being administered to patients. The lack of scientific verification and clear definitions for medical innovations and interventions are major concerns.
A population-based retrospective cohort study found that COVID-19 vaccination during pregnancy is not associated with an increased risk of preterm birth, small for gestational age at birth, or stillbirth. The study concluded that COVID-19 vaccination during pregnancy can inform evidence-based decision-making about its safety.
A Rutgers scientist has developed a highly sensitive DNA test that can detect Lyme disease in horses, a condition that can cause long-term complications. The test, called genomic hybrid capture assay, was tested on a sick horse and successfully identified the pathogen, allowing for early diagnosis and treatment.
Researchers identify PRC1 as key to establishing and maintaining ovarian reserve, providing insights into female reproductive health and lifespan. The study's findings may help explain premature ovarian failure and infertility in humans.
A new study found that coral spawning events at deeper depths occur at lower intensities than those in shallow waters. The researchers suggest that deep reefs may more often rely on shallow-reef corals to survive.
Researchers found similar operational procedures for remote medication abortion services across diverse practice settings, with adaptations made to local laws and regulations. The study highlights the feasibility of offering abortion services through telehealth, demonstrating potential variations in service adaptation.
Researchers discovered that human egg cells skip a crucial metabolic reaction to maintain their reproductive capacity without losing energy, allowing them to remain dormant in ovaries for up to 50 years. This finding explains why some women with mitochondrial conditions linked to this reaction do not experience reduced fertility.
A University of Ottawa-led team has developed an AI-based deep learning model to identify cystic hygroma, a rare and life-threatening disorder, from first-trimester ultrasound scans with high sensitivity and specificity. The approach may be applied to other fetal anomalies identified by ultrasonography.
A new study published in Behavior Genetics found that natural selection favors characteristics associated with lower earnings and poorer education, such as having more children. The research, led by UEA, analyzed data from over 300,000 people in the UK and suggests that this may be contributing to increasing income inequality.
Researchers have generated molecular maps of the second week of gestation, revealing the biochemical signals that control human embryo development. This breakthrough provides a crucial reference for studying birth defects and pregnancy loss in humans.
Researchers found that zinc ion serves as a master-regulator of various processes in sperm to facilitate fertilization. Zinc helps maintain sperm in the non-capacitated state, preventing premature capacitation during artificial insemination.
A Rutgers study analyzing brain stem cells of autism patients found irregularities in early brain development, supporting the concept that ASD arises from poor control of brain cell proliferation. The study discovered that some patients had NPCs producing too many brain cells while others had underproduced cells.
A new study published in JAMA Internal Medicine suggests that COVID-19 vaccination during pregnancy can provide protection to newborns against SARS-CoV-2 infection. The study found a lower incidence of confirmed SARS-CoV-2 infection in infants born to vaccinated mothers compared to unvaccinated mothers.
The ECOG-ACRIN Cancer Research Group presented promising trial results at ASCO 2022, including an 8-year survival rate in the CHAARTED prostate trial. The research also explored outcomes by tobacco use in head and neck studies, shedding light on cancer treatment effectiveness.
Researchers found that australopithecines' smaller brain sizes at birth were likely an adaptation for bipedalism, allowing them to navigate the complex birth canal. The study suggests that prolonged learning outside the womb was crucial for cognitive and cultural development in early humans.
Research reveals that older men with higher BMI display reduced reproductive health, particularly in terms of sperm cell production. The study also highlights the potential biomarkers for diagnosis of testis aging and directions for potential treatment.
Current guidelines for treating women's obesity, hypertension and diabetes are based on men's studies. Researchers call for sex-specific guidelines to accurately treat these conditions in women, as they have different risk factors and manifestations.
A recent study published in ACS Omega analyzed protein levels in semen of men who recovered from COVID-19 and found significant reductions in sperm count, motility, and normally shaped sperm. The researchers also detected changes in fertility-related proteins such as semenogelin 1 and prosaposin.
A recent study found that obese pregnant women are at a higher risk of experiencing stillbirth or neonatal death. The research revealed that over 60% of this increased risk is associated with deliveries occurring at an earlier gestational age, highlighting the importance of careful prenatal care and monitoring.
A blood test may identify risk of stillbirth and placentitis in pregnant individuals who have had COVID-19. The finding could improve care for high-risk pregnancies and lead to the development of a new screening tool.
Aging egg cells accumulate damage to genetic material, preventing maturation and fertilization. Researchers have identified a key process causing this damage and found that anti-viral drugs can reverse it.
Researchers used an ancient fish, elephant sharks, to gain insights into human biology and how a widely used medication works. The findings show that progesterone receptor activation in humans requires a different mix of hormones and steroids than in elephants sharks, with the latter not inhibited by RU486.
Scientists discovered two new targets, EPPIN domains, to block sperm motility, a complex process that allows sperm to reach the egg. The study demonstrates the feasibility of using mice as models for in vivo trials, simplifying preclinical studies and paving the way for novel male contraceptives.
In Bangladesh, cesarean sections have increased significantly from 3.88% in 2004 to 33% in 2017/18, but the disparity in access between wealthy and poorer women has grown. The study highlights the need for targeted interventions to address this issue.
Researchers at Boston University found no association between COVID-19 vaccination and conception likelihood in female or male partners. However, COVID-19 infection was linked to reduced fertility in men, particularly those testing positive within 60 days of a cycle.
A recent study published in Pediatric Research found no SARS-CoV-2 genetic material in breastmilk from mothers infected with COVID-19, ruling out transmission to infants. The authors analyzed 110 lactating women and did not find any clinical evidence of infection in breastfeeding infants.
A study by USF Genomics program found that prenatal exposure to the Rwandan genocide was associated with epigenetic modifications in genes linked to mental disorders. These 'chemical' changes can have a rapid response to trauma across generations, suggesting a possible link between historical trauma and modern-day mental health issues.
Researchers at Boston Medical Center created a new resource to manage long-term heart disease risk after specific pregnancy complications. The review synthesizes recommendations for primary care clinicians to assess and manage risk, focusing on preeclampsia, gestational diabetes, and preterm delivery.
A new study reveals that poor women in rural India are more likely to die during childbirth due to lack of access to safe hospital births. The research found that only 26% of women in low-performing states deliver in hospitals, compared to 87% of those exposed to mass media.
A study published in BMC Medicine found that maternal hypertension genes influence infant birth weight through effects on the placenta. The researchers analyzed fetal growth data and found a significant association between maternal genetic risk score and placental weight.