How Is PKU Treated?

Getting and keeping Phe low for life

High blood Phe levels can cause problems for your brain throughout your life.

Without early treatment, a child may have growth problems, developmental delays, seizures, and mental retardation.

In teens and adults, untreated PKU can lead to

  • Lower IQ
  • Bad moods, being cranky or irritable
  • Feeling “foggy”
  • Thinking and responding slower
  • Not being able to focus or pay attention
  • Higher incidences of anxiety, depression, phobias, and social isolation

To protect the brain, people with PKU need to keep blood Phe levels low. Low Phe is good, and lower is better.*


Quick Poll
Which of the following best describes you?
Parent/caregiver of an infant with PKU
Parent/caregiver of a child with PKU
Teenager with PKU
Adult with PKU
Grandparent of a child with PKU
Know someone with PKU
Healthcare professional