Poisonous Protein: Breastfeeding and Pregnancy with PKU
Phenylketonuria (PKU) is an inherited metabolic disorder in which an affected person is less able to process the amino acid phenylalanine. Abnormally high levels of phenylalanine in the blood and tissues can cause a variety of toxic effects, including brain damage. All infants born in hospitals in the United States, and much of the rest of the first world, are routinely tested for PKU. With proper dietary management, most PKU patients have good outcomes.1








