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Understanding Longevity: What is the oldest person with PKU?

While there is no definitive, publicly recorded “oldest person” with PKU, a 1998 study documented an untreated male surviving to age 79, a powerful fact for the time. Today, advances in care and universal newborn screening mean individuals with PKU can expect a normal lifespan when following their prescribed treatment, completely redefining the question of what is the oldest person with PKU.