If you've gone down the rabbit hole of all things hair growth or hair loss ... and phenylketonuria (PKU). The former makes it difficult for the body to reuse biotin. The latter is a genetic ...

However, not eating enough protein can lead to symptoms like pale, dry skin, hair loss, frequent illness, muscle loss, and weak bones. This is why following a strict diet for PKU can be ...

The American Academy of Pediatrics recommends all newborns undergo screening for metabolic conditions like phenylketonuria (PKU), maple syrup urine disease (MSUD), and mitochondrial trifunctional ...