Baby's development during the first three months


Baby's development during the first three months

The amazing brain


Remarkably, by the age of 2, your baby's brain will reach around 80% of its adult size. During the first few months their brain will develop lots of complex systems that they'll make use of later in life. Building these pathways depends on your baby getting the right nutrients and, without them, their brain may not develop to its fullest.


Zinc, iron, iodine, B vitamins, choline and omega-3 fats, such as DHA, are some of the keys to a healthy developing brain and your baby's growth and development. About 60% of your baby’s brain is made of fat. One of the fatty acids that plays an important role in helping to support both your baby’s brain and eye development is DHA (docosahexaenoic acid). Your baby's brain should get what it needs during the first few months from the nutrients in their breastmilk or infant formula.



Immune System Support


What you feed your baby from the start may make a difference in supporting their digestive health and the development of a healthy immune system. Breastmilk actually has plenty of good stuff to help support your little one's immune system. It also supports balanced immune functions by helping to reduce the risk of your infant developing allergies. This may be partially related to the protein content of human milk, which does not trigger allergic reactions. For infants who are not exclusively breastfed, the choice of formula can also play an important role in the development of the immune system.



Baby’s developing tummy: a work in progress


During the first few months, your baby produces a limited amount of digestive enzymes, and is only capable of digesting the proteins found in breastmilk or infant formula. As your little one grows, their digestive tract matures, which will eventually allow them to eat and successfully digest different foods.


Breastmilk is naturally gentle on your baby’s developing digestive system. Because the digestive system develops in the first 3 to 4 months, your baby could be very sensitive to protein sources other than milk from Mom during this time. Your baby will get all the nutrients they need from breastmilk or baby formula up until the middle of their first year, so there’s no need to hurry when it comes to adding in new sources.


Not only will your baby get the nutrients they need from breastmilk, they'll also receive important probiotics. B. lactis and L. reuteri help improve good bacteria in tiny tummies. While B. lactis supports their developing immune system and digestive health, L. reuteri can ease colic, excessive crying and fussiness.

Share this article

Got questions? Chat with Dotti, your personal baby expert! Got questions? Chat with Dotti, your personal baby expert! Got questions? Chat with Dotti, your personal baby expert!

Text Dotti 24/7

Fill out the form to start your convo with Dotti (don't worry, you'll only have to do this once).
Not a MyGerber member?

* Text message delivery is subject to your mobile carrier network availability. Access and delivery is not guaranteed. Standard data fees and text messaging rates apply. Click here for Privacy Policy.