A new research study of sleep behavior and emotional health in adults with phenylketonuria (PKU) is being conducted by Shawn Christ and colleagues at the University of Missouri. Adults (age 18-40 years) who have previously been diagnosed with PKU are invited to participate. Study participation is all online and does not require any in-person visits. Participants will complete a brief pre-screening questionnaire over the phone, then complete brief surveys online (15-30 minutes total). Participants will ... (read more)