Your Newborn Is Not Fragile. But They Are Extraordinary. What the First Days of a Baby’s Life Are Actually Like

The first few days of a newborn’s life are simultaneously more ordinary and more miraculous than most parents anticipate. More ordinary because the practical reality — feeding every two to three hours, sleeping in brief intervals, producing an alarming quantity and variety of bodily outputs — has a relentless normalness to it that quickly overwhelms any initial sense of occasion. More miraculous because when you look closely at what a newborn is actually doing, what they are already capable of, what they already know — the wonder is available at every moment, if you can find the space to notice it.

What a newborn already knows

A newborn recognises their mother’s voice from birth — they have been hearing it for months. A newborn prefers their mother’s smell over all other smells — the smell of the amniotic fluid, which they have been swimming in, is similar to the smell of the breast, which guides them to feed. A newborn has a full set of primitive reflexes that have evolutionary significance — the rooting reflex that guides them to the breast, the sucking reflex that enables feeding, the Moro reflex that signals perceived falling, the palmar grasp that in our evolutionary past prevented infants from being dropped. A newborn’s visual acuity is limited to approximately 20 to 30 centimetres — exactly the distance from the breast to the mother’s face during feeding. They see faces better than any other object and prefer them from birth.

The newborn microbiome and why birth method matters

A baby born vaginally passes through the birth canal and is colonised by the mother’s vaginal and gut microbiota — specifically the Lactobacillus species that dominate the healthy vaginal microbiome. These bacteria form the foundation of the infant’s gut microbiome and are associated with lower rates of allergic disease, asthma, eczema, and autoimmune conditions in childhood. A baby born by caesarean section is first colonised by the skin and environmental bacteria of the operating room. Research consistently shows differences in microbiome composition between vaginally and caesarean-born infants that persist for months and are associated with measurable differences in immune development. Where caesarean birth is necessary, vaginal seeding — applying vaginal swabs to the newborn immediately after birth — is an emerging practice that partially compensates for this microbiome difference.