Risperidone associated with low iron stores in some patients.

Iron deficiency results in cognitive deficits in rodents, which can be reversed with stimulants. In humans, iron deficiency causes behavioral and neuropsychological impairments, both with or without anemia. For children with attention-deficit hyperactivity disorder (ADHD), low ferritin - a marker of body iron stores - has been associated with more severe symptoms and a poorer response to psychostimulants. [ABSTRACT FROM AUTHOR]