Early diagnosis and dietary restriction of phenylalanine can prevent intellectual disabilities associated with phenylketonuria (PKU).

“phenyl Ken ARA is a um Bittersweet condition in the sense that uh it can be associated with intellectual disabilities if not treated but if caught early and um if treated with a diet that is restricted in fenol in one of the amino acids that we see in proteins if we restrict that then even though individuals with PKU can't digest that and get rid of the toxic byproducts we can prevent those toxic byproducts from building up in the body and essentially poisoning the brain”