I am a Nutritionist and I have been working since 1990 in the nutritional treatment of Inborn Errors of Metabolism at Centro de Genética Médica JM - Centro Hospitalar Universitário do Porto, Portugal. I am part of the team at the National Reference Center of Centro Hospitalar Universitário do Porto for the treatment of Inborn Errors of Metabolism and also at MetabERN: European Reference Network for Rare Hereditary Metabolic Disorders. I also do research in Nutrition and Dietetics in Inborn Errors of Metabolism, with a special focus on the nutritional status of patients with Phenylketonuria.