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Division of the U.S. Department of Health and Human Services concerned with public health
The removal of the mercury‑based preservative thimerosal from routine U.S. childhood vaccines began as a precautionary policy action in 1999 and was largely completed for childhood immunizations by 20...
Yes: U.S. government health officials conducted a decades‑long experiment that withheld treatment from hundreds of Black men with syphilis from 1932–1972, a breach of ethics that the government later ...
Public concern about mercury exposure prompted federal health bodies to treat thimerosal — a mercury-containing vaccine preservative — as avoidable even though reviews found no evidence it caused auti...
Fluoride is broadly endorsed by major health organizations as , but higher or unmonitored exposures can cause harm, notably dental fluorosis and potential neurodevelopmental effects at elevated concen...
Fluoride in drinking water provides measurable dental-caries prevention at low concentrations but carries documented harms at higher exposures; recent federal reviews and 2025 reporting show . Federal...