Use of the drugs in children under the age of two was associated with lower antibody levels after the jabs—perhaps, researchers suggest, due to microbiome alterations.

A study finds that the odorless compound hexadecanal, or HEX, increases aggressive behavior in women but has a calming effect on men.

After a handful of cases in Ireland, clinicians there are warning that the virus might infect the placenta in very rare instances and cause fetal distress, but a rise in stillbirths has not been seen in epidemiological studies.

An abundance of immunoglobulin antibodies, and a paucity of viral RNA, in breastmilk offer evidence that women can safely continue breastfeeding during the pandemic.

The gut microbiome is more malleable in the first two years after birth, allowing probiotics to make their mark. Can we exploit this to improve infants’ health?

The microbial makeup of a newborn baby’s intestines has changed dramatically over the past 100 years, and we are now beginning to understand how and why this matters.

Using DNA data, researchers track family dynamics in Europe over the last 500 years and find socioeconomic status is related to married women having a child with a man other than their husband.

The successful delivery spells hope for the related northern white rhino, which is facing extinction.

A trial called BabySeq, in which researchers performed genomic sequencing on 159 newborns, identified children susceptible to diseases that regular screening doesn’t look for.

Scientists have found the 99-million-year-old remains of a baby snake.

MRI data suggest prenatal exposure to the medication increases the volume of brain regions vital to processing emotions.

Alterations to a protein involved in breathing may help explain some cases of sudden infant death syndrome, a study finds.

Infants whose moms received the shots when they were pregnant were no more at risk of dying or being hospitalized than other babies. 

The baby cephalopod looks and behaves like an adult from the moment it emerges from the egg.

Vaginal birth leads to changes in the development of offsprings’ microbiomes not seen among mice born via C-section, which researchers suspect might contribute to the weight differences.

One-third of babies who died of SIDS had higher-than-normal levels of the neurotransmitter in their blood serum, according to a study. 

Thirty percent of bacteria found in babies' guts came from mothers' milk, a study finds.

Study of 81 six-week-olds who were born by C-section or vaginal delivery didn’t show differences in the structure or function of their microbiota, despite contrary results from other studies on babies.