UNDERSTANDING PHENYLKETONURIA (PKU)

Phenylketonuria PK is a rare hereditary condition. It affects the individual's ability to metabolize an protein building block called phenylalanine. Normally, the body produces an enzyme called phenylalanine hydroxylase, which converts phenylalanine into tyrosine. In people who have PKU, this enzyme fails to function properly. As a result, phenylal