News & Updates

Weight gain in first trimester linked with fetal fat gain. Findings may have implications for preventing early life forerunner of later life obesity.

High levels of some forever chemicals in pregnancy could lead to midlife obesity, a study suggests.

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.

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.

Exposure to caffeine in the womb, even in small amounts, may lead to shorter height in childhood, suggests an analysis by NICHD researchers. Children of women with low caffeine intake during pregnancy were slightly shorter than their peers born to women who consumed no caffeine while pregnant. The gaps in height widened between ages 4 and 8 years.

Giving the hormone adiponectin to pregnant mice with obesity prevented later life obesity and related health conditions in their offspring, according to a study funded by the National Institutes of Health. The findings suggest that adiponectin, a hormone produced by fat cells, could play a role in reducing the lifelong obesity risk of children born to mothers with obesity during pregnancy.

Maternal obesity before pregnancy may increase the risk of asthma in early childhood, suggests a study by the National Institutes of Health. Children born to mothers with obesity were more likely than those born to mothers without obesity to have persistent wheezing, an indication of asthma.

A new method to detect genetic material from the placenta in the blood of pregnant women could potentially identify the risk for gestational, or pregnancy-related, diabetes in the first trimester, suggests a small study funded by the National Institutes of Health.

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.

Sleep-disordered breathing in early pregnancy is associated with insulin resistance or difficulty clearing glucose from the blood, suggests a small study funded by the National Institutes of Health. The results strengthen the link between sleep-disordered breathing, which includes pauses or slowing of breathing during sleep, and gestational diabetes. They also suggest that screening pregnant women, particularly those with overweight or obesity, for sleep-disordered breathing could identify those who might benefit from early interventions to reduce their diabetes risk.

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.

Pregnant women made only modest dietary changes after being diagnosed with gestational diabetes, according to a study by NICHD researchers.

Pregnant women who consumed the caffeine equivalent of as little as half a cup of coffee a day on average had slightly smaller babies than pregnant women who did not consume caffeinated beverages, according to a study by researchers at the National Institutes of Health.

Pregnant women who are infected with SARS-CoV-2, the virus that causes COVID-19, during the third trimester are unlikely to pass the infection to their newborns, suggests an NIH-funded study.

Vegetarian diets during pregnancy are associated with small infant birth weight, but not a higher risk preterm birth or other medical complications, suggests a National Institutes of Health study.

Women with asthma are more likely than normal to gain weight during pregnancy and to retain weight 3 months after giving birth, suggests a National Institutes of Health study. On average, women with asthma gained 3.1 kg (just under 7 lbs) more after a full-term pregnancy than women without asthma. Among women with asthma, weight gain was greater with obesity. Weight gain was also greater with more severe asthma and with asthma triggered by exercise. The study authors suggest that their findings underscore the importance of pre-pregnancy counseling for women with asthma on the need to achieve and maintain a healthy body weight.

Exercise during pregnancy stimulates fetal production of brown fat, which boosts metabolism and burns calories, even after birth, suggests a mouse study funded by the National Institutes of Health. When fed a high-fat diet, mice born to mothers who exercised had less weight gain than mice whose mothers did not exercise.

Maternal obesity may increase a child’s risk for attention-deficit hyperactivity disorder (ADHD), according to an analysis by NICHD researchers.

Human milk oligosaccharides found in breastmilk may influence a child’s growth from infancy through early childhood, according to an NICHD-supported study.