News & Updates

A new study funded by the National Institutes of Health contradicts the current recommendation that women with obesity should lose weight before trying to conceive. The study of more than 300 women with obesity found no difference in the proportion of live births among women with unexplained infertility who lost weight before infertility treatment and a similar group who did not lose weight before treatment.

COVID-19 vaccination does not affect the chances of conceiving a child, according to a study of more than 2,000 couples that was funded by the National Institutes of Health. Researchers found no differences in the chances of conception if either male or female partner had been vaccinated, compared to unvaccinated couples. However, couples had a slightly lower chance of conception if the male partner had been infected with SARS-CoV-2 within 60 days before a menstrual cycle, suggesting that COVID-19 could temporarily reduce male fertility.

Read about NICHD’s research findings and activities from 2021.

As we ring in the new year, 2022 marks a special milestone—the 60th anniversary of NICHD.

Women receiving one dose of a COVID-19 vaccine during a single menstrual cycle had an increase in cycle length of nearly one day, according to an NIH-funded study.

Pregnant women with disabilities have a much higher risk for severe pregnancy- and birth-related complications and death than other pregnant women, according to findings by researchers at the National Institutes of Health. Appearing in JAMA Network Open, the analysis of more than 223,000 deliveries in 19 U.S. hospitals found that roughly 2,199 women had a disability.

It just got easier to participate in the PregSource®: Crowdsourcing to Understand Pregnancy research project. The free app allows participants to track their weight, sleep, mood, and other features of their pregnancy in just a few taps.

Awarded projects seek to reduce pregnancy complications and prevent maternal deaths.

Dr. Grewal has been acting director of the division since February 2020.

The National Institutes of Health will support a four-year follow-up study on the potential long-term effects of COVID-19 on women infected with SARS-CoV-2 during pregnancy. The study will also follow their offspring for any potential long-term effects.

As we usher in November and Thanksgiving, it’s a fitting time to reflect on NICHD’s commitment to research on nutrition.

Episodes of maternal stress or depression during pregnancy are associated with chemical modifications to placental genes, according to a study by researchers from the National Institutes of Health. The modifications involve DNA methylation—binding of compounds known as methyl groups to DNA—which can alter a gene’s activity. Some of the methylation changes associated with maternal depression occurred near genes involved in brain development, suggesting that maternal depression in pregnancy could have long-term implications for the mental development of the child.

No serious adverse events were reported by 180 breastfeeding women receiving either the Pfizer or Moderna vaccine, either among themselves or in their infants, according to a study funded by the National Institutes of Health. For the mothers, adverse events included muscle and body aches, fever and vomiting, pain, redness, swelling, or itching at the injection site.

NIH-supported program reduces maternal deaths, complications in rural Guatemalan communities.

Racial and ethnic disparities in maternal mortality in the United States may be larger than previously reported, suggests an NICHD-funded study.

Preemptive treatment for a nonviable pregnancy of unknown location resolves the condition more rapidly than treating symptoms as they arise, suggests an NICHD-supported study. However, both treatment approaches convey similar risks of adverse events.

Preeclampsia—a life-threatening hypertensive disorder of pregnancy—may begin with a failure of the outermost cells of the early placenta to sufficiently invade the uterine wall, suggests a study funded by the National Institutes of Health. Researchers generated these outermost cells—known as trophoblasts—from stem cells taken from placentas of women who had preeclampsia during pregnancy.

Among American Black and white women, the risk and extent of fibroids—benign tumors of the uterus—are associated with ancestry to distinct regions and populations, suggests a study funded by the National Institutes of Health. The study provides information that may lead to insights on the origins and treatments for these common tumors.

The National Institutes of Health will award up to $400,000 to individuals or groups who design an effective method for analyzing a large data set of first-time pregnancies and identifying risk factors for adverse outcomes, such as hypertensive disorders, diabetes and infection. A total of $50,000 will be awarded to each of seven winners designing the most effective means to analyze the data. An additional $10,000 will be awarded to the top five winners whose methods identify risk factors in disadvantaged populations.

Researchers at the National Institutes of Health have developed a prototype device that could potentially diagnose pregnancy complications by monitoring the oxygen level of the placenta.