title: Manganese in infant formulas and learning disability.
abstract: The concentration of manganese in the hair of normal newborn infants was found to increase significantly from 0.19 micrograms/g at birth to 0.965 micrograms/g at 6 weeks of age and 0.685 micrograms/g at 4 months when they were fed infant formula. There was an insignificant increase to 0.330 micrograms/g at age 4 months in breast-fed infants. After this age there was a slow decline in hair manganese to 0.268 micrograms/g in normal children at age 8 years and 0.434 in learning disabled (hyperactive) children. This is the third study reporting elevated hair manganese in learning disabled children.
mesh_terms: D001942:Breast Feeding; D002648:Child; D002675:Child, Preschool; D006197:Hair / Q000032:analysis*; D006801:Humans; D007223:Infant; D007225:Infant Food / Q000032:analysis*; D007231:Infant, Newborn; D007859:Learning Disabilities / Q000378:metabolism*; D008345:Manganese / Q000032:analysis*
chemical_list: D008345:Manganese