Lipase in Expressed Human Milk

Sometimes, some mothers’ pumped milk tastes “off” or “soapy” when stored for a few days in the fridge, or if frozen then later thawed. These moms often have a high amount of lipase in their milk, an enzyme that breaks down fats. The broken down fats taste and smell differently, and although not harmful, babies will often reject drinking this milk from a bottle. Read these further explanations and strategies to manage excessive lipase in expressed milk.

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