UNDERSTANDING PHENYLKETONURIA (PKU)

Phenylketonuria phenylketonuria is a rare hereditary condition. It affects the body's ability to metabolize an essential nutrient called phenylalanine. Typically, the body makes an enzyme known as phenylalanine hydroxylase, which converts phenylalanine into tyrosine. In people who have PKU, this enzyme fails to function properly. As a result, pheny