NURturing deSirE

Milk Memories The Science of Milk

What Is Colostrum? Why the First Milk Is Called Liquid Gold

The first milk is ready before the baby is, a teaspoon at a time, and it’s packed.

The fuller story

The World Health Organization calls colostrum “the perfect food for the newborn” and recommends that breastfeeding begin within the first hour after birth. The amounts are tiny. The NHS describes about a teaspoonful at each feed, which suits a newborn’s tiny stomach, because colostrum is concentrated. It’s high in protein, vitamins, minerals and immune factors such as secretory IgA, lactoferrin and white blood cells, and it’s relatively low in lactose. Cleveland Clinic, noting that it’s often called liquid gold, describes it as filled with white blood cells that produce antibodies.

It doesn’t last long. After about two to four days (some sources say up to five), the milk “comes in”: volume rises, and over the next couple of weeks transitional milk gives way to mature milk.

Not every culture has welcomed the first milk. A 2020 review of infant feeding in India describes colostrum being seen in some communities as “cursed milk,” sometimes discarded or even buried, with honey or other first feeds given in its place. What one tradition treated as waste, biology treats as the most concentrated meal of a life.

Why it matters

The book’s key page describes the Pearl, one of its brush marks, as “a small drop. Something worth keeping.” That’s colostrum exactly: the body’s first letter to a newborn, written in antibodies.

It’s also where The Memory of Milk begins: the origin molecules that wrote the body’s first language, and the way their echoes carry through a life. Questions about colostrum or early feeding belong with a midwife, a doctor or an IBCLC.

Sources

  1. World Health Organization, “Breastfeeding” (health topic page, Viet Nam office)
  2. “Colostrum,” Cleveland Clinic
  3. Ballard O, Morrow AL, “Human Milk Composition: Nutrients and Bioactive Factors,” Pediatric Clinics of North America, 2013
  4. “Breastfeeding: the first few days,” NHS
  5. Chellaiyan VG et al., “Healthy nutrition for a healthy child: A review on infant feeding in India,” Journal of Family & Community Medicine, 2020

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