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From Blood to Baby:
How Breast Milk Is Made

Breast milk is a remarkable, living substance that provides everything your baby needs for the first months of life. Understanding how it’s made can help you feel confident and empowered as you navigate breastfeeding.

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Did you know that breast milk is essentially made from your blood? It’s true! Your body has an incredible way of taking nutrients from your bloodstream and transforming them into the perfect nourishment for your baby.

Breastfeeding is one of the most amazing ways your body nourishes your baby.

Let’s break it down step by step:

Step 1: Nutrients from Your Blood

Your breast milk starts with your blood. Special milk-producing cells in the alveoli (tiny sacs in your breasts) pull water, proteins, fats, sugars, vitamins, minerals, and antibodies directly from your bloodstream. These nutrients are the building blocks of your baby’s milk.

Step 2: Milk Production in the Alveoli

Inside the alveoli, your cells transform blood nutrients into milk. Glucose becomes lactose (milk sugar), amino acids become protein, and fatty acids form milk fat. Immune cells and antibodies are also added, giving your baby protection against germs.

Step 3: Milk Storage

Once the milk is made, it sits in the alveoli until your baby is ready to feed. Your breasts act like a natural storage system, keeping milk fresh and ready.

 

Step 4: The Let-Down Reflex

 

 

When your baby latches, nerve signals trigger the release of oxytocin, the “let-down” hormone. Oxytocin makes the myoepithelial cells around the alveoli contract, pushing milk through the ducts and out of your nipple—right into your baby’s mouth.

Step 5: Supply Meets Demand

 

 

The more often your baby nurses or milk is expressed, the more your body produces. Breastfeeding works on a supply-and-demand system, which is why frequent feeding helps increase milk production.

 

 

Breastfeeding isn’t just feeding your baby—it’s a complex, beautiful process where your body transforms its own nutrients into perfect nourishment for your little one. Truly remarkable!

 

Tips to Support Milk Production

  • Nurse frequently and on demand, not to limit to every 2 hours 

  • Ensure proper latch and positioning, detaching if baby doesn't have that "fish lip"

  • For a good breastfeeding latch, the baby's lips should be flanged outward like "fish lips" or a trumpet, with the tongue cupping the nipple and the chin deep into the breast, not the nose touching; if lips are tucked in or form blisters, it often signals a shallow latch, potential oral restrictions (like tongue-tie), or poor positioning, requiring adjustment for comfort and effective milk transfer

  • Stay hydrated, focusing of fruit for instant hydration and live electric energy, consuming a minimum of 2000 calories daily

  • Rest whenever possible

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