The Food and Drug Administration (FDA) of the United States on Thursday recommended a stricter limit of lead, which is allowed to be contained in certain types of children's candy.

The new limit recommended for the highly toxic metal in children's candy is within one-tenth of a part per million, compared to the previous, decade-old level of one-half a part per million.

The step was taken after it was found additional ingredients such as chili powder, tamarind pulp and some salts used in some sweets can boost the lead content beyond allowable levels.

The lead is believed to come from improperly washed and stored ingredients grown in lead-contaminated soils. Another source is the candy wrapper printed with inks containing the metal.

"This new guidance level will further reduce an already minimal risk from lead exposure in candy," said Acting FDA Commissioner Andrew von Eschenbach.

The new guidance is expected to take effect next year, the FDA said.

Lead poisoning is linked to behavioral problems and learning disabilities and can even cause seizures or death. The risk is the highest for children under age 7 because of their quick growth.

Source: Xinhua