Fluoride in nursery water poses health concerns for infants. Fluoride leads to an increased chance of developing dental fluorosis, an alteration in the appearance of teeth that produces white spots on the surface of teeth, according to the Centers for Disease Control and Prevention. Fluoride may cause neurological impairment in infants because fluoride has greater access to the brain.
Neurological impairment from fluoride is in part associated with the effect that fluoride has on the thyroid gland. Infants are the most susceptible to fluoride toxicity than any other age group. According to the Fluoride Action Network, infants can receive 400 percent more fluoride than adults from drinking the same water as a result of infants' small size. Numerous dental researchers make the recommendation that caregivers abstain from putting fluoridated water in infant formula.