Home » Blog » Breastfeeding » What is the difference between mature milk and transitional milk?

What is the difference between mature milk and transitional milk?

Understanding the Differences Between Transitional Milk and Mature Milk
Breastfeeding is a dynamic process that evolves significantly in the days and weeks following childbirth. Among the various stages of breast milk, transitional milk and mature milk play crucial roles in meeting the nutritional needs of a newborn. Understanding the differences between these two types of milk can help new parents navigate the breastfeeding journey more effectively.
What is Transitional Milk?
Transitional milk is produced during a specific window postpartum, typically from day 5 to day 14 after childbirth. This type of milk serves as a bridge between colostrum—the nutrient-rich first milk—and mature milk, which is the final stage of breast milk production. Transitional milk is characterized by its creamy texture and higher fat content compared to colostrum, making it more calorically dense. It contains essential nutrients, including increased levels of lactose and water-soluble vitamins, which are vital for the rapidly growing infant.
During this phase, mothers may notice changes in their bodies, such as fuller and heavier breasts, as their milk supply increases. The milk itself may also change in appearance, transitioning to a bluish-white color as it becomes less viscous than colostrum.
What is Mature Milk?
Mature milk begins to appear around the end of the second week postpartum and continues to be produced for as long as breastfeeding occurs. This milk is generally thinner and more watery than transitional milk, often described as having a bluish tint. Mature milk is designed to meet the ongoing nutritional needs of the growing infant, providing a balanced mix of proteins, fats, carbohydrates, and vitamins.
One of the key features of mature milk is its adaptability; it changes in composition based on the infant’s age and needs. This ensures that as the baby grows, they receive the appropriate nutrients to support their development.
Key Differences
1. Timing: Transitional milk is produced from about day 5 to day 14 postpartum, while mature milk starts to appear after this period and lasts for the duration of breastfeeding.

2. Composition: Transitional milk is richer in fat and calories compared to colostrum, while mature milk is lighter and more watery, designed to provide ongoing nutrition as the infant grows .
3. Physical Changes: Mothers may experience breast fullness and engorgement during the transitional phase, which typically subsides as mature milk production stabilizes.
4. Nutritional Focus: Transitional milk supports the rapid growth of newborns in the early days, while mature milk continues to adapt to the changing needs of the infant as they develop.
Conclusion
In summary, both transitional milk and mature milk are essential components of breastfeeding, each serving distinct purposes in the nutritional journey of a newborn. Understanding these differences can empower parents to better support their infants’ growth and development during the critical early weeks of life. As the breastfeeding experience unfolds, the body’s remarkable ability to adapt milk composition ensures that infants receive the best possible nourishment tailored to their evolving needs.

Should I dump breast milk with blood while pumping?

Although it may seem counterintuitive, you shouldn’t stop breastfeeding or breast pumping just because there are traces of blood present. Even if you have a blood infection or illness, continue to pump to avoid blocked ducts or painful engorgement while you and your doctor determine the cause and treatment.

What are the benefits of mature milk?

Mature breast milk is also rich in micronutrients: vitamins, minerals and trace elements, from calcium to cadmium, to support her development and wellbeing. The balance of these changes throughout the day to meet your baby’s needs. Some of your breast milk’s constituents might surprise you.

Does transitional milk taste different?

This study showed that transitions in breastmilk from colostrum to mature milk were accompanied by changes in the taste of milk, in which saltiness and umami decreased and bitterness and sourness increased.

When should I start milk transition?

You should know that the American Academy of Pediatrics still recommends a combination of solid foods and breastmilk or formula for children under 12 months. Only after 1 year do they suggest introducing whole cow’s milk.

How long will I have transitional milk?

You will make transitional milk from 2-5 days after delivery until up to 2 weeks after delivery. You may notice that your breasts become fuller and warmer and that your milk slowly changes to a bluish-white color. During this time, your breast milk changes to meet your baby’s needs.

Can you give transitional milk to an older baby?

Yes! As long as it’s frozen use the transitional milk. But use it sooner rather than later. Because your milk just keeps maturing as times goes one. And that transitional milk is good for baby now, also don’t mix different milks from different times ☺️ hope this helps!

Can I start transitioning my 10 month old to whole milk?

You should know that the American Academy of Pediatrics still recommends a combination of solid foods and breastmilk or formula for children under 12 months. Only after 1 year do they suggest introducing whole cow’s milk.

What is a transitional milk?

Transitional milk is high-protein breast milk that a woman produces about 3 to 6 days after her baby is born. A woman’s breasts are stimulated to produce transitional milk by breastfeeding her baby regularly.

What are the benefits of transitional milk?

Transitional milk: Increasing in quantity
They’re becoming more mature too, as is your milk. Compared to colostrum, there are higher levels of fat in transitional milk, as well as increased lactose, a natural sugar that gives your baby energy.

Is transitional milk the same as mature?

Mature milk is produced in as great a volume as transitional milk but is thinner and more watery or even bluish; sometimes it’s described as looking like skim milk when it is first secreted, until the fat is released later in the feeding and it becomes more creamy.

Natasha Lunn

Tash is an IBCLC and Business Coach helping fellow IBCLCs create fun, profitable businesses that are more than just an expensive hobby. Before becoming an IBCLC and starting her private practice - The Boobala, Tash graduated as an Osteopath in 2008 and has been in Private Practice in South West Sydney. She was also a volunteer Breastfeeding Counsellor and Community Educator with the Australian Breastfeeding Association for 6 years. Through her business, Your Lactation Biz, Tash coaches and creates products to help new and seasoned IBCLCs build businesses that suit their personality and lifestyle.

Leave a Comment