"Kennedy has erroneously called fluoride 'an industrial waste' and blamed its addition in drinking water on health issues including arthritis, bone fractures, bone cancer, IQ loss, neurodevelopmental disorders and thyroid disease. Health experts widely agree that fluoride — a common, naturally occurring mineral — at regulated levels is a major benefit to public health."
https://www.npr.org/2025/04/10/g-s1-59452/hhs-rfk-fluoride-drinking-water-epa