Actually is requires surprisingly little lead to cause brain damage in very small children. Those are the ones that put everything, including their toys, in the mouths. After one reaches age 5, or even earlier, the brain has grown a membrane around itself that goes a very long way in protecting its from lead poisoning. It is the very young who are at greatest risk for lead poisoning. This is a big issue in the wargaming community because lead was used in the manufacture of "historical miniatures" (a.k.a. "toy soldiers") for decades. I have just passed on the info that one of the members of our wargaming club gave us. He is a professor of chemistry at Vanderbilt University, so I tend to trust him. BTW, his explanation of super glue is really interesting.

Ed