A new study suggests a link between high levels of fluoride and lowered IQ. It's heating up arguments over fluoridating drinking water, which... Fluoride analysis triggers renewed debate over what ...

Most communities in the U.S. add fluoride to the tap water. It has been common practice for nearly 80 years to protect against tooth decay and cavities, and it's considered a major achievement in ...

Most water systems in the U.S. have fluoride added to help protect residents' teeth. Some research raises concerns that, at high enough levels, fluoride may be linked to lower IQs in kids. Justin ...