Early-Life Low Lead Levels and Academic Achievement in Childhood and Adolescence

In this cohort study assessing early life low lead level and children's and adolescents' academic achievement, a 1-unit increase in lead levels in the range currently considered low for further interventions was associated with worse academic performance throughout school grades comparable to that for lead levels in the range recommended for additional interventions. These findings support the need to reconsider and potentially lower current blood lead reference values for recommending further interventions.