The association of lead exposure during pregnancy and childhood anthropometry in the Mexican PROGRESS cohort

We found a significant negative association between maternal 3rd trimester blood lead concentration and offspring height for age (β−0.10; 95% CI −0.19, −0.01), and a negative association between maternal 3rd trimester blood lead concentration and weight for age (β−0.11; 95% CI −0.22,−0.003). Our results in this Mexican population add to previous findings of an association of lead and decreased stature and weight in early childhood. Ongoing follow-up and longitudinal analyses may help elucidate how this impacts growth trajectory and other children's health outcomes.