Many new mothers freeze and store their breast milk for later use, which is great, as long as it’s not reheated in a microwave. In the same way that microwaves heat plates of food unevenly, they can also warm a bottle of breast milk unevenly, creating ‘hot spots’ that can severely burn a baby’s mouth and throat. Then there’s the carcinogen hazard that comes with reheating plastic. It’s recommended that breast milk and formula be thawed and reheated in a pot on the stove, or using hot tap water. As a workaround, you could heat a cup of water in the microwave and then drop the bag or bottle of breast milk in it to thaw.
Read this to find out about four things you should never microwave at all.