While most children and adults with Duarte galactosemia (DG) are believed to do well, it remains
unclear whether DG is associated with an increased risk for specific developmental difficulties.
One study of developmental outcomes among toddlers and very young children with DG did not find
evidence of significant developmental problems. To read more about that study, see:
Two studies of older children with DG did find some evidence of developmental problems. To read
more about those studies, see:
It is also not known if galactose exposure in infancy or early childhood affects the developmental
outcomes of children with DG.
Until more research has been done in this area, any developmental or psychosocial problems
identified in a child with DG should be treated symptomatically, and other possible causes should
Premature ovarian insufficiency, a common outcome among girls and women with classic
galactosemia, has been checked by hormone studies and does not appear to occur at high
prevalence among girls with DG. To read more about that study, see: