We would like to thank Rachel Woods for the contribution to this article.

Colostrum is often called “liquid gold” by lactation specialists, midwives and infant-health researchers. It’s the early milk produced in the first days after childbirth: thick, yellow and rich in antibodies, proteins and nutrients.

Newborn babies benefit greatly from it because their immune systems are not yet fully developed and their stomachs can only hold very small amounts. For babies, there’s no debate: colostrum is incredibly beneficial.

But some wellness brands are marketing colostrum to adults. Kourtney Kardashian Barker’s Lemme range sells it as sweet gummies and as a sugar-free liquid supplement and creamer.

The appeal is easy to understand. Colostrum has a powerful reputation in infant health

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