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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 ...
A precautionary review of infant mercury exposure prompted U.S. public health agencies and medical groups in 1999 to ask manufacturers to remove or reduce thimerosal from childhood vaccines, even thou...
reduces tooth decay and has been a mainstream public‑health measure for decades, but recent studies and legal pressure have pushed regulators to re‑examine potential non‑dental harms — especially at h...
Retirees can be summoned back to active duty under federal statute and service regulations, but the power to do so is bounded by age, grade, medical fitness, statutory limits and service-specific proc...
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...