There is a moment many parents describe with quiet confusion. The milk looked fine yesterday. The baby took it without hesitation. And then, suddenly, something changes. A smell. A taste. Baby refuses the milk. Mom’s response, “Something is wrong with my milk.”
Over the years, I’ve heard this story in many forms. And increasingly, I’m seeing a new explanation circulating: that “off milk” is the result of too much DHA, too many polyunsaturated fats, or an imbalance driven by supplementation. It’s an appealingly simple explanation. But human milk is not simple.
Human Milk Is a System—Not a Single Nutrient
One of the most important things we understand about human milk is that it functions as a living, integrated system. Nutrients do not operate in isolation, they protect, regenerate, and stabilize one another. This is especially true when it comes to oxidation.