Throughout our childhoods, most of us grew up seeing advertising about the benefits of fluoride. We could only have strong, healthy teeth if we brushed several times a day with a fluoride toothpaste. But now that we’re adults, some of us are aware that supplementing with fluoride might do much more harm than good. And a big part of the problem lies in the “other” sources of fluoride beyond our toothpaste.
Source: Jon Barrow