What is Phenylketonuria (PKU)?

Phenylketonuria is a rare, inherited metabolic disease. When the baby is born, they do not have the ability to break down amino acid phenylalanine.

If treatment is not started within the first few weeks of life, mental retardation and neurological problems will arise. 

When treatment is begun early and well-maintained, children with phenylketonuria can expect normal development and a normal life span.
[Schuett, 2008] [5]

Phenylalanine