Lead Poisoning

https://en.wikipedia.org/wiki/Lead_poisoning

Lead-containing products

Leaded gasoline ...

Lead compounds are used widely in paints, and lead paint is a major route of lead exposure in children ...

Residual lead in soil contributes to lead exposure in urban areas ...

In the US, 14–20% of total lead exposure is attributed to drinking water ...

Children

Children are more at risk for lead poisoning because their smaller bodies are in a continuous state of growth and development. Lead is absorbed at a faster rate compared to adults, which causes more physical harm than to older people. Furthermore, children, especially as they are learning to crawl and walk, are constantly on the floor and therefore more prone to ingesting and inhaling dust that is contaminated with lead.

The classic signs and symptoms in children are loss of appetite, abdominal pain, vomiting, weight loss, constipation, anemia, kidney failure, irritability, lethargy, learning disabilities, and behavioral problems. Slow development of normal childhood behaviors, such as talking and use of words, and permanent intellectual disability are both commonly seen. Although less common, it is possible for fingernails to develop leukonychia striata if exposed to abnormally high lead concentrations.