← Latest news 
Fluoride in drinking water linked to lower IQ in children US report warns
Science
Published on 24 April 2026
The risk appears above a specific fluoride threshold
A US government report by the National Toxicology Program reviewed global studies and found a consistent association between higher fluoride levels in drinking water and lower IQ in children. The analysis flags levels above 1.5 milligrams per liter as most concerning, while noting more research is needed to confirm mechanisms and guide potential policy changes.
- US review links higher fluoride exposure to lower childhood IQ
- Association is reported for drinking water above 1.5 mg per liter
- Findings come from analyzing multiple global studies
- Further research and policy adjustments may be needed
Read the full story at The Economic Times
This summarization was done by Beige for a story published on 
The Economic Times