Interested to know how does galactosemia lead to hypoglycemia?

Newborn phenomena: This occurs in the newborn with inherited galactosemia. Galactose is part of lactose, which is the principal sugar in milk. Galactose needs to be broken down to glucose, but that does not happen in galactosemia. So baby is missing a big chunk of sugar intake, and his enzymes that convert fat and Amino Acids to glucose are not well developed.