Is it helpful to deep freeze breast milk?

Yes: Well, it depends on your supply and if you can use it later. Breast milk has a shelf life, and deep freezing can extend that by months. If you have designs to give breast milk until 1 year of life, deep freezing while milk supply is strong can enable you to give breast milk even if after several months the supply begins to dwindle. Some women find this happens no matter what, and freezing helps.

Yes: If you are producing a lot more milk than your baby needs then deep freezing makes sense. Breast milk is good for 1-2 months in a regular freezer and is best stored in the back of the freezer. In a deep freezer, the molk can last longer, up to 3-6 months. Don't forget to label each bag or bottle with the pumped date and try to use the oldest bottles first.