The effects of fluoride on the brain. Based on new research, the U.S. Department of Health and Human Services’ National Toxicology Program reached a draft conclusion that fluoride should be “presumed to be a cognitive neurodevelopmental hazard to humans." The video sources, transcript, and doctor's notes are available at https://see.nf/3UOmS8J This is the fourth video in a five-part series on water fluoridation. If you missed any of the previous ones, see: - "Why Is There Fluoride in Water? Is I