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Manganese in infant formulas and learning disability
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.
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.