News & Updates

Each year, more than 20,000 families in the United States experience a stillbirth, the loss of a fetus at 20 weeks or more of gestation. Stillbirth is a traumatic event that takes a devastating, lifelong psychological toll on families. October marks Pregnancy and Infant Loss Awareness Month, making this an opportune time to reflect on the work we must do to better understand the causes of—and ultimately prevent—these tragedies.

The risk for hypertensive disorders of pregnancy was higher for pregnant women with HIV if they had low CD4+ immune cell counts in the first or second trimester, or if they began taking antiretroviral drug regimens after 20 weeks of pregnancy, rather than at conception. The findings underscore the importance of getting HIV under control before becoming pregnant.

A new imaging technique that measures the ability of the placenta to supply blood to the fetus may predict the chances of impaired fetal growth as early as the 14th week of pregnancy. The new method seems to allow earlier diagnosis than the standard ultrasound technique, which can detect reductions in placental blood flow at 20 to 24 weeks. Earlier detection of fetal growth restriction and risk of small for gestational age fetuses may lead to strategies for treating these conditions.

The effects of climate change on health are wide-ranging, from causing injuries and other medical concerns to disrupting vital supply chains. NICHD is committed to supporting scientific research to reduce climate-related health threats among its populations of interest—children, people of reproductive age, and people with intellectual and physical disabilities.

NICHD announced a new cycle of funding for research collaborations in its Global Network for Women’s and Children’s Health Research. The network, which is re-competed every seven years, includes U.S.-based research centers and counterparts in low- and lower middle-income countries. The Global Network has been improving maternal and child health outcomes worldwide and building health research capacity in resource-poor settings since 2001.

Individuals with COVID-19 may experience a slight increase in menstrual cycle length, comparable to the menstrual cycle increase seen among those who received a COVID-19 vaccine, according to a study funded by the National Institutes of Health. The study authors stressed that the increase was small and temporary.

NIH has awarded $24 million in first-year funding to establish Maternal Health Research Centers of Excellence. The centers will develop and evaluate innovative approaches to reduce pregnancy-related complications and deaths and promote maternal health equity.

The gynecologic condition endometriosis has several differences in gene expression in the uterine lining, according to a comprehensive analysis of nearly 1,000 tissue samples by researchers funded in part by the National Institutes of Health. The differences stem from variations in DNA methylation—the binding of compounds known as methyl groups to DNA.

Infants born to mothers with sleep-disordered breathing—snoring, apnea, and other breathing difficulties during sleep—are more likely to develop complications such as jaundice, low blood sugar, seizures, or death during the newborn period, suggests a study funded by the National Institutes of Health. The authors called for studies to determine if treating mid-pregnancy, sleep-disordered breathing would improve infant outcomes.

Epigallocatechin gallate (EGCG), a compound found in green tea, appears to inhibit the biochemical processes that promote the growth and development of fibroid tumors cells, suggests a study funded in part by the National Institutes of Health. In laboratory tests of human fibroid cells, EGCG reduced the amount of a compound that promotes cell division and the quantity of proteins responsible for the tumors’ fibrous contents.

Strengthening our understanding of human milk biology and lactation is essential to support breastfeeding and to ensure the health of infants who do not have access to a lactating parent’s milk. NICHD supports a range of efforts to explore human milk as an active biological system and to promote the inclusion of pregnant and lactating people in clinical research.

A device known as a pessary, thought promising for reducing preterm birth risk due to a short cervix, appears no more effective than usual medical care, according to a study funded by the National Institutes of Health. A pessary is a rounded silicone device that fits around a cervix that has shortened, to keep it from opening and leading to miscarriage or preterm birth. The device is typically removed before the 37th week of pregnancy.

Depression from six weeks gestation through the end of pregnancy may increase the risk of heart and blood vessel disease up to two years after birth, suggests an analysis funded by the National Institutes of Health.

Tranilast, a drug used to treat allergies and certain types of scars, reduced the size of human fibroid tumors implanted in mice, according to an NIH-funded study. The authors said the results warranted additional studies in animals and perhaps in later human trials to evaluate this potential treatment for non-cancerous gynecologic tumors that can cause bleeding and pain and sometimes interfere with fertility.

A new guide developed by NICHD and its partners promises to standardize the exchange of clinical data on maternal and infant health. The guide is an important step toward establishing a common framework to help clinicians and scientists better understand the root causes and high rates of maternal morbidity and mortality.

NIH has announced the next round of winners of its Connecting the Community for Maternal Health Challenge—a $3 million prize competition to encourage community-based and advocacy organizations in the United States to develop the infrastructure and capabilities necessary to conduct maternal health research.

Premenopausal females who were vaccinated for COVID-19 were no more likely to report irregular menstrual cycles, heavier bleeds or menstrual pain than a similar group of unvaccinated women, according to a study funded by the National Institutes of Health. However, consistent with several previous studies, participants reported a small increase in cycle length of roughly one day following injection.

The health of pregnant women and new mothers in the nation’s prisons should be prioritized to avoid future public health crises from COVID-19, according to an analysis by NICHD-funded investigators. Recommended policy changes include early release, when possible, because pregnant women are at high risk from COVID-19, and prisons are not well-equipped to provide the necessary medical care. Moreover, prisons should promote COVID-19 vaccination and develop targeted messages for this population to counteract vaccine misinformation.

Infants born in 2020 through mid-2021 to women with COVID-19 weighed less at birth, but grew at a faster rate than a comparable group born to women who did not have COVID-19, according to a study funded by the National Institutes of Health. Previous studies have found that preterm infants and other infants who are small or underweight at birth and who undergo catch-up growth in the first year are at higher risk for later life obesity, heart disease, high blood pressure and diabetes, compared to infants born at normal weight. The authors called for additional studies of infants whose mothers had COVID-19 during pregnancy to learn if they have increased health risks later in life.

Tranexamic acid appears no more effective than placebo in reducing the need for blood transfusion or preventing maternal death in patients with increased risk for excessive bleeding because of cesarean delivery, according to a study funded by the National Institutes of Health. Tranexamic acid slows the natural breakdown of blood clots and was considered promising for reducing the risk of excessive bleeding after giving birth—known as postpartum hemorrhage—after cesarean delivery.