Birth Weight News and Research

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Paternal valproate use not linked to offspring neurodevelopmental risks

Use of the antiseizure drug valproate by fathers before conception is not associated with neurodevelopmental disorders like autism or attention-deficit/hyperactivity disorder (ADHD) in their children, according to a new study published August 19, 2026, in Neurology®, an official journal of the American Academy of Neurology.

19 Aug 2026

Prenatal strength training may help reduce the risk of gestational diabetes

Various forms of physical exercise may help prevent diabetes during pregnancy (or gestational diabetes), but data are limited. In a randomized clinical trial published in Acta Obstetricia et Gynecologica Scandinavica including 209 pregnant women, participants who followed a strength training program from gestational weeks 12–14 until week 36 or delivery had lower rates of gestational diabetes.

19 Aug 2026

Rising wildfire smoke in the US offsets improvements in prenatal health

Wildfires are well-known health risks. Now, in a new Frontiers in Environmental Health study, researchers in the US have – for the first time – evaluated how prenatal PM2.5 exposure has changed over space and time on a national scale, and what role wildfires play in shaping these trends.

7 Aug 2026

Air pollution in pregnancy raises birth risks differently across trimesters

A population-based study of 26,582 live singleton births in Madrid found that associations between NO₂ exposure and adverse birth outcomes varied by pregnancy stage, with key patterns emerging in the first and third trimesters.

6 Aug 2026

Korean study finds no overall childhood cancer link with maternal diabetes

Researchers followed 549,851 Korean children and found no statistically significant association between maternal diabetes and overall childhood cancer. The analysis linked maternal diabetes to an 81% higher relative risk of urinary tract cancer, but the absolute difference was only 37 additional cases per 100,000 offspring.

4 Aug 2026

Study links higher body fat to lower sperm counts despite normal BMI

Among 1,058 Danish men, higher body fat percentage was associated with lower total sperm count and altered reproductive hormone levels, but not testicular volume. Body fat percentage showed stronger links with several semen measures than BMI or waist-to-height ratio, with the sperm-count association strengthening among men with normal BMI.

2 Aug 2026

Father's diet before conception impacts baby's body composition

A father's diet can affect his children's health and body composition before they are even conceived. A study of 43 triads of fathers, mothers, and newborns treated in the public healthcare system of Ribeirão Preto in the state of São Paulo, Brazil, demonstrated this.

28 Jul 2026

Poor premature infant growth linked to lasting brain abnormalities

Research led by the University of Granada (UGR) paves the way for new intervention and monitoring strategies for this high-risk population.

24 Jul 2026

Preterm adults show varied outcomes across optimal, moderate, and low-functioning groups

A landmark 34-year study, co-led by University of Warwick, tracks very preterm babies from birth to middle adulthood and identifies early cognitive development as the strongest predictor of who flourishes and struggles as adults.

21 Jul 2026

Prenatal acetaminophen use not linked to adverse birth outcomes

There is no statistically significant evidence that taking acetaminophen, also known as Tylenol, during pregnancy has a negative impact on how early a child is born or a child's weight at birth, according to new research led by environmental scientists at the UNC Gillings School of Global Public Health.

17 Jul 2026

Early skin-to-skin contact helps calm newborns but does not lower bilirubin

Early skin-to-skin contact after vaginal birth reduced newborn stress during routine vitamin K injection and improved exclusive breastfeeding rates by day 5. However, it did not significantly lower day-5 bilirubin levels, leaving its effect on neonatal jaundice uncertain.

7 Jul 2026

Study reveals long-term, intergenerational impacts of severe preconception trauma

Can the trauma of a parent rewrite the mental health of a child born decades later? A new compelling study reveals that children born decades after the Holocaust to parents who were older than age five at the time of the initial Nazi persecutions faced elevated schizophrenia risk.

7 Jul 2026

ADHD and autism traits share a common developmental spectrum

Research identifies a neurodevelopmental spectrum for ADHD and autism, emphasizing genetic links and their impact on cognitive and educational outcomes.

7 Jul 2026

Study reveals double burden of malnutrition among low-income urban children in India

Children growing up in a low-income urban community in Vellore are now facing two seemingly opposite forms of malnutrition simultaneously: persistent thinness and rising obesity by the time they reach primary school age.

2 Jul 2026

Umbilical cord proteins may explain lifelong health effects of low birth weight

Researchers have long sought to discover why babies who weigh less than expected at birth, a condition known as small for gestational age, or SGA, are at higher risk for heart, lung and metabolic diseases as adults.

2 Jul 2026

Genetics play a bigger role than pregnancy in childhood obesity risk

Genetic factors primarily explain the link between parental and childhood BMI, with maternal obesity impacting birth weight more than later childhood obesity.

1 Jul 2026

Could your birth characteristics influence colorectal cancer risk?

A California study links birth and parental factors to early-onset colorectal cancer risk, highlighting male sex and Hispanic ethnicity as key contributors.

26 Jun 2026

Recognizing perinatal heart failure early reduces life-threatening risks

Early detection and timely treatment of heart failure in pregnant or postpartum women are crucial to prevent serious complications, such as irregular heartbeat, stroke and death, according to a new American Heart Association scientific statement, "Heart Failure Occurring in the Perinatal Period."

25 Jun 2026

Parental genes rather than pregnancy weight influence childhood body mass index

The link between parents' body mass index (BMI) and their children's BMI in childhood is driven largely by genetic inheritance, rather than by any direct biological effects of parental weight during pregnancy, a new study suggests.

23 Jun 2026

Survey reveals critical knowledge gaps in maternal health recommendations

Most Americans know that how well a mother takes care of herself before and during pregnancy affects the health of a baby, but many people remain unclear about some specific maternal health recommendations, including when to start avoiding alcohol, according to a new nationally representative survey from the Annenberg Public Policy Center (APPC) of the University of Pennsylvania.

29 May 2026