Colostrum – 5 Important Ways It Helps Your Baby

Colostrum - 5 Important Ways It Helps Your Baby

Many expectant women are unaware that their breasts begin to make milk from around week 16 of pregnancy.

Some women may realise this later in pregnancy if their breasts start to leak.

The first milk that your breasts make is called colostrum, which is usually a thick, yellow coloured substance (although the colour can vary between women).

After the birth, it takes a few days or so for your milk to come in.

Until then, your baby receives colostrum.

The Importance Of Colostrum

Colostrum is important for your baby for many reasons. Here are 5 important ways it helps your baby.

#1: Colostrum Matches A Newborn’s Tummy Size

In the early days of life, a newborn’s tummy is tiny – about the size of a marble.

Colostrum is made in small amounts to match a newborn’s tummy size.

For example, in the first 24 hours a newborn consumes between 2-10mL of colostrum at a feed.

For most babies, colostrum is all that they need until their mother’s milk comes in.

#2: It Provides Immune Protection

A newborn’s immune system is far from being fully developed. Hence, they are vulnerable to illness and require protection from external sources.  This is where colostrum (and later, breastmilk) is important.

In order to be able to match the size of a baby’s tummy while providing babies with all they need, colostrum is a concentrated source of immune protective factors.

These immune protective factors include antibodies, white blood cells, prebiotics and probiotics – all of which are not contained in formula. All of these factors help protect newborns from sickness. No wonder colostrum is often referred to as nature’s vaccine for newborn babies!

Colostrum’s role in a newborn’s gut is especially important. This is because a newborn’s gut is leaky, meaning that potentially harmful substances can more easily sensitise or damage it.

Colostrum helps to provide a barrier in a newborn’s gut, helping protect it from these potentially harmful substances entering.

#3: Laxative Effect

Colostrum has a mild laxative effect, helping a baby pass his early stools.

This aids in the excretion of excess bilirubin and can help protect against jaundice.

#4: Removal In First Hour Helps Kick Start Your Supply

Research has shown that when colostrum is removed within the first hour after birth (even as compared to between hours 2-6), the more milk a mother will produce.

There are many other steps you can take to get breastfeeding off to the best start possible and help kick start your supply.

Find out what you need to know before the first breastfeed.

#5: Help Establish A Healthy Gut Microbiome

The bacteria in our gut is referred to as our gut microbiome.

Evidence continues to emerge about how a resilient gut microbiome is important for our health.

A resilient gut microbiome is one that is more diverse and less likely to shift towards unhealthy bacteria.

Exclusive breastfeeding (including newborns only consuming colostrum in the early days of life) leads to the normal healthy colonisation pattern of a newborn’s gut. There are significant differences in the bacteria that are in the guts of breastfed babies compared to formula fed babies.

Even small amounts of formula can result in changes to a baby’s gut microbiome which may increase the risk of various poorer health outcomes.

If you are struggling with breastfeeding, or are worried that you’re not producing enough colostrum, be sure to seek prompt help such as from an International Board Certified Lactation Consultant. Seeking help quickly can help prevent things from feeling like they’re spiralling out of control.

  • 27


Renee Kam is a mother of two daughters, an International Board Certified Lactation Consultant (IBCLC), a physiotherapist, author of 'The Newborn Baby Manual' and an Australian Breastfeeding Association Counsellor. In her spare time, Renee enjoys spending time with family and friends, horse riding, running and reading.


    1. This is very dangerous and your baby needs nutrition. If he fills even some of his stomach up on water, he could get very sick and end up with health problems like failure to thrive. Simply stop the water. Breastmilk contains the perfect balance of water and nutrition – even on hot days, breastmilk is all they need. When it’s hot, they will want to feed more often and that’s fine. But he’s way too little for water, let alone before breastmilk.

  1. I want to exclusively breast feed if possible, my baby is 7 days old feeding is going well but when my milk came in it was so much and so full and so tight and painful and baby wouldn’t latch because of it, so I expressed each side and then baby drank both sides like a champ afterwards. Now my question is do I feed it to baby with a bottle to get its nutritional benefits as it’s quite yellow and colostrum looking like and there’s about 150 mls of it (currently in the freezer), or just keep breast feeding and not risk upsetting the breastfeeding with introducing a one off bottle. I’m asking as I’m starting to feel a little sick just sore throat etc atm as is my toddler and want to help avoid my newborn getting sick.

  2. Breastmilk is first immunity boost for child after birth. so don’t dealy after birth . it’s 100% benefits​ for new borns with calcium and protien.

Leave a Reply

Please note: in order to prevent spam and inappropriate language, all comments are moderated before they appear. We appreciate your patience awaiting approval. BellyBelly receives many comments every day, and we are unable to approve them all as soon as they are posted.

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

loaded font roboto