Experts look to combat racial disparities in lead exposure Sep 29, 2022 | Population Health, Top Stories Lead-contaminated soil in urban areas can lead to cognitive decline in children, and studies show that Black children in urban areas have a higher median blood level. To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.