How hazardous are toys with high levels of lead content?
Lead is a confirmed neurotoxin that can affect children's learning abilities and increase their risk for behavioral problems.
"The general rule of thumb is that there is no 'safe' level of lead when it comes to children," said Bryan L. Williams, associate professor of pediatrics at Le Bonheur Children's Medical Center in Memphis, Tenn. "Trace amounts of lead can be harmful to a child over time."
Such concerns have provoked massive recall of toys by Mattel, a leading US toy company and the suicide of a Chinese manufacturer whose supplies were declared tainted.
But many pediatric toxicology specialists noted that the recall should not cause undue panic among parents.
"Say the child has one of these toys and has played with it for four to five months," said LuAnn White, director of the Center for Applied Environmental Public Health at Tulane University in New Orleans.
"The actual dose of lead they receive is probably very low. They may have gotten a little lead from it, but if you look at lead poisoning, it's more of a chronic thing, a low level of exposure over a long period of time," she said. "If the parents did buy this toy and their children were playing with it, they would probably want to take it away, but they don't need to be unduly concerned that the child's lead levels pose a significant threat."