Scientists in a large Brazilian study have found dangerous levels of toxic metals, especially barium and lead, in popular plastic children's toys. Laboratory methods allowed the identification of a total of 21 hazardous elements in the toys tested. The researchers also investigated how easily these substances are released when the toys are used. Although only small amounts of these metals are released from the toys, the overall concentrations are high. High concentrations of toxic metals in toys raise serious safety concerns for children. The study points to the need for stricter monitoring of toxic substances in toys. The results confirm the risk of long-term exposure of children to toxic metals through toys.