evidence card · fluoridation_cognition_safe
Community water fluoridation at recommended levels does not reduce IQ
H4
▲ supports
stakes high
2 posts scored
·
across 1 account
·
2 sources
Summary
At recommended US levels (0.7 mg/L), high-quality studies do not find IQ decrement. At much higher exposures, some cohort studies suggest small effects; debated. NTP 2024 monograph focused on levels >1.5 mg/L.
Five-score assessment
Scores not yet assigned for this card. (Legacy card; will be populated on next refinement.)
Scope
Population
children exposed to fluoride at ≤0.7 mg/L (US recommendation)
Intervention
community water fluoridation
Outcome
IQ
Not supported for
- very high fluoride exposure (>1.5 mg/L) where some signal exists
Evidence sources
Sources
-
advisory CDC: Community Water Fluoridation ↗