New study finds maternal fluoride exposure from tea consumption is associated with reduced child IQ.

A new study published this week by brain health researchers Christine Till and Bruce Lanphear found that children in the Canadian MIREC cohort who were exposed to higher levels of fluoride in tea had reduced IQs.

This makes 88 studies showing fluoride lowers IQ.

“Maternal fluoride exposure from tea consumption is associated with reduced child FSIQ independent of other beverages. As tea can be a major source of exposure, pregnant women may consider limiting intake. Clearer labeling of fluoride content could support informed choices.”

Study Highlights:

• Prenatal fluoride from tea intake was associated with lower child IQ.A 0.5 mg/day rise in fluoride intake related to a 2.2-point lower FSIQ.
• A 0.5 mg/day rise in fluoride intake related to a 2.2-point lower FSIQ (child full-scale IQ.)
• Tea consumers had higher fluoride exposure than non-tea consumers.