Lead is most dangerous to children, especially those under six. According to CDC nearly one half of a million children living in the United States have levels of lead in their blood that exceed ten micrograms of lead per deciliter of blood, a level at which adverse health effects are known to occur. Lead poisoning can affect virtually every body system; it can damage a child’s central nervous system, kidneys, and reproductive system. Why lead is most dangerous to children? and how can we prevent it?