What’s in Breast Milk? breast milk wide variety of nutrients contains breastmilk Human breast milk (HBM) human breast milk breast milk contains many important nutrients recommends breastmilk protein is made up of approximately 60-80% whey protein is a crucial aspect of breast milk What's in Breast Milk? vitamins, fats, carbs, and proteins found in breast milk Breast milk Human breast milk (HBM) vitamins, fats, carbs, and proteins found in breast milk American Pregnancy Association American Pregnancy Association What's in Breast Milk? naturally high in calcium recommends