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Concept

phenylketonuria

Phenylketonuria (PKU) is a rare genetic disorder characterised by a mutation in the gene for the enzyme phenylalanine hydroxylase. This deficiency prevents the body from breaking down the amino acid phenylalanine, leading to toxic accumulation in the blood and brain. If untreated, it causes permanent intellectual disability, making the phenylalanine in aspartame a critical health concern.

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