They continue: 'For context, a 5-point decrease in a population's IQ would nearly double the number of people classified as intellectually disabled.' It comes after a US government report ...

WASHINGTON-A controversial new study released on Jan 6 in a US medical journal could reignite debate over fluoride’s safety in water, linking higher exposure levels to lower IQ in children.

A controversial new study in a US medical journal could reignite debate over fluoride’s safety in water, linking higher exposure levels to lower IQ in children. Published on Monday in the ...