It is revealed that they live in an old building with peeling paint.
Black children have the highest risk of developing lead poisoning.
Lead poisoning also occurs in children living in homes built after 1946 but the prevalence is lower. Lead is an enzymatic poison. It can affect almost any organ system of the body, but in children the brain is very vulnerable. Typically, lead interferes with the incorporation of Fe into the hemoglobin molecule, leading to a decrease in heme production and, therefore, a decrease in cellular oxidation. This decrease in cellular oxidation has a profound effect on the developing brain, resulting in delayed or reversed development, permanent learning disabilities, seizures, coma, even death .