What dietary adjustment is recommended for a child diagnosed with phenylketonuria?

For a child diagnosed with phenylketonuria (PKU), a low-phenylalanine diet is crucial for managing the condition. PKU is a genetic disorder characterized by the body's inability to metabolize phenylalanine, an amino acid found in many protein-rich foods. Elevated levels of phenylalanine can lead to serious neurological problems, including cognitive impairment and developmental delays.

By following a low-phenylalanine diet, the intake of foods high in this amino acid, such as meat, dairy products, nuts, and certain grains, is significantly restricted. This dietary adjustment helps maintain phenylalanine levels within a safe range, preventing potential damage to the child's brain and promoting healthy development.

Other dietary options, such as a high-protein diet or a ketogenic diet, would be inappropriate and could exacerbate the problem by increasing phenylalanine intake. A gluten-free diet is not relevant to PKU management, as it specifically targets celiac disease or gluten sensitivity rather than issues related to phenylalanine metabolism. Therefore, focusing on a low-phenylalanine diet is key to effectively managing PKU in affected children.