How much lead is harmful?
Blood lead levels of 10 micrograms of lead per deciliter of blood (mcg/dL) or greater are considered harmful. This level has been associated with decreased intelligence, behavior problems, reduced physical stature and growth, and impaired hearing. A child is estimated to lose 2 IQ points for each 10-mcg/dL increase lead in blood lead concentrations. A variety of intervention actions are taken at various thresholds above 10 mcg/dL. Pregnant women and women who are nursing are also at risk from lead exposure. Fetuses have been shown to receive lead from their mothers and nursing mothers can pass lead through their breast milk. In both cases, the unborn and young children are taking in levels of lead that have more of an impact due to their smaller size. It should be noted that local and state health departments recommend that children be routinely screened for lead at 9 months and again at 24 months. • Does a high level of lead in tap water cause health effects? High levels of lead in ta
Blood lead levels of 10 micrograms of lead per deciliter of blood (mcg/dL) or greater are considered harmful. This level has been associated with decreased intelligence, behavior problems, reduced physical stature and growth, and impaired hearing. A child is estimated to lose 2 IQ points for each 10-mcg/dL increase lead in blood lead concentrations. A variety of intervention actions are taken at various thresholds above 10 mcg/dL. Pregnant women and women who are nursing are also at risk from lead exposure. Fetuses have been shown to receive lead from their mothers and nursing mothers can pass lead through their breast milk. In both cases, the unborn and young children are taking in levels of lead that have more of an impact due to their smaller size. It should be noted that local and state health departments recommend that children be routinely screened for lead at 9 months and again at 24 months.
