Q&A: Will My Milk Change?

Will my milk change as my baby grows?
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ByNancy Mohrbacher, IBCLC, FILCA
Lactation Specialist
Updated
Mar 2017
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Yes. The milk in the early months is higher in whey protein, which is easier to digest. As the baby gets older, the amount of casein protein, which requires a more mature digestive system to process, increases. Also, every time a mother is exposed to an illness (even before she comes down with symptoms), the antibodies to that illness pass into her milk, so baby’s immune system will benefit more as time goes on.

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