The opiate-like drug effects of the casomorphin in cow’s milk may have a depressive effect on the respiratory center of infants and lead to “milk apnea,” in which babies temporarily stop breathing and are placed at risk for sudden infant death syndrome (crib death). Interestingly enough sleep apnea in breast fed babies can also be caused when their mother consumes cows milk.
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© Video from Dr. Greger of NutritionFacts.org. Image from FoodMatters.tv