Any parent knows that infants and children are generally more vulnerable to toxic substances.
That is why parents do not give adult doses of drugs to their children. The EPA, in contrast, allows infants and children to eat adult approved doses of pesticides that have not been evaluated in terms of their safety for infants and young children. Infants and children react differently than adults to many drugs and toxic substances. In many cases they suffer far more serious damage as a result. Lead causes permanent loss of mental capacity when infants and children are exposed at levels of little consequence to adults.