A **controversial study** published in the Journal of the American Medical Association (JAMA) Pediatrics links higher **fluoride exposure** to lower IQ in children.
Researchers reviewed **74 studies** from multiple countries, finding a **statistically significant association** between fluoride levels and decreased IQ.
For every **1 mg/L increase** in urinary fluoride, children’s IQ may decrease by **1.63 points**.
Critics are concerned about the **study's methodology**, noting that many of the studies reviewed were rated as **low quality**.
The debate over fluoride’s safety in water is intensified as it serves nearly **two-thirds of the US population**. For further details, visit the original article at SCMP.