According to Motherly, there are many reasons why a parent will decide to use donated breast milk. These can vary widely, from feeding babies who have allergies, don’t tolerate formula or were born with conditions including cleft lip and cleft palate, to feeding babies who have been adopted or were born premature. Also, in the case of maternal death or absence, or in cases where a parent can’t produce milk or breastfeed as a result of medications or medical procedures including mastectomies, donated breast milk can make a world of difference.

In the comments under Serena’s post, many parents also joined in to praise the American for raising awareness for this often overlooked practice.

“My baby (was) adopted and ended up having severe dairy allergies, so we relied on donor milk. It was such a gift to us and I’m always so grateful when I think about it!” wrote a user named Katie.

“As a NICU mom of twins who needed donor milk while waiting for mine to come in, thank you for donating,” a user named Carly said in the comments.

“Love not only that you did this but that you’re posting about it to bring much needed attention and visibility to the need for donor milk! Thank you!” another user named Katie added.For those who have been inspired to donate, here’s a quick guide from WebMD on how to support your nearest milk bank.