UNDERSTANDING PHENYLKETONURIA (PKU)

Phenylketonuria PKU is a rare hereditary condition. It influences the body's power to metabolize an protein building block called phenylalanine. Normally, the liver makes an enzyme designated as phenylalanine hydroxylase, which converts phenylalanine into tyrosine. In people who have PKU, this enzyme fails to function properly. As a result, phenyla