Human Milk and the Protein Myth
Human milk is relatively low in protein compared with animal milks, and its protein differs in quantity and quality — a reminder that “more protein” is not automatically “better.”
More protein isn't automatically better
It's often assumed that more protein is always better. Milk composition complicates that. WHO/NCBI gives human breast-milk protein as about 0.9 g per 100 ml — lower than animal milks — and notes that breast-milk protein differs from animal-milk protein in both quantity and quality. So protein isn't only about grams: amount, quality, and context all matter.
Human milk vs animal milks
WHO/NCBI figure for human breast-milk protein.
WHO/NCBI: human-milk protein is lower than animal milks, and differs in quality as well as quantity.
More protein is not automatically better. Milk protein varies by species and life stage in both amount and quality — so grams alone don't make a food “better.”
What this suggests — and what it doesn't
What this suggests
- More protein is not automatically better.
- Biological foods differ by species, life stage, and purpose.
- Protein quality and context matter, not just grams.
What this does not prove
- Adults should avoid dairy.
- Infants should get less protein.
- Anyone should change infant feeding based on this page.
- Formula decisions should be made from this page.
Sources used
Infant and Young Child Feeding: Model Chapter (Session 2 — breast-milk composition)
World Health Organization (WHO), via NCBI Bookshelf · 2009
States breast-milk protein is “0.9 g per 100 ml,” is “lower than in animal milks,” and “differs in both quantity and quality from animal milks.”