UNDERSTANDING PHENYLKETONURIA (PKU)

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