By the 1950s, the U.S. government's Public Health Service and the American Dental Association acknowledged the success of water fluoridation in reducing cavities. That led to the broad U.S. adoption of adding fluoride in community water supplies and eventually its inclusion in dental products such as toothpaste and mouthwash.

You should be able to talk to folks, your doctor, your friends, your family, whatever, on any of these issues, and then make an honest judgment about what