Question
A 28-year-old new mother, currently in the lactation period, wants to understand why breast milk does not freeze.
Answer
The various nutritional components in breast milk have different freezing points. Therefore, during storage, some components may have already frozen, while others have not. Due to the differences in freezing points among different breast milk components, it is possible to observe the phenomenon of breast milk seemingly not freezing during short storage periods. In reality, as long as the storage time is long enough and the storage environment is sufficiently cold, breast milk can completely freeze. Some people may mistakenly believe that breast milk does not freeze, which may be due to insufficient storage time or partial freezing and partial non-freezing during the storage process, thus creating the illusion that breast milk does not freeze.