Donald Trump's second term may threaten what's lauded as one of the top public-health triumphs of the 20th century: adding fluoride, a mineral that helps prevent tooth decay, to drinking water.

Fluoride – it's added to the water systems of more than two thirds of Americans. It's in dental products from toothpaste to mouth wash. It's been the subject of long-running conspiracy theories.

Fluoride can come from a number of sources, including most toothpaste brands, but researchers say drinking water is the main source for Americans. "Studies continue to show that widespread ...

Fluoride – it's added to the water systems of more than two thirds of Americans. It's in dental products from toothpaste to mouth wash. It's been the subject of long-running conspiracy theories.

Fluoride can be found in drinking water, food and beverages, toothpaste, mouth rinses and dental treatments such as fluoride varnish. Here are some common questions you may have about how fluoride ...

(Photo by John Anderson/The Austin Chronicle/Getty Images) In 1950, federal officials endorsed water fluoridation to prevent tooth decay, and continued to promote it even after fluoride toothpaste ...

Since the widespread adoption of fluoridated toothpaste ... free children, but with smaller effect sizes than earlier studies.” U.S. health officials in 2015 lowered the recommended amount of ...

Recent reports suggest the benefits of adding fluoride to water supplies may not be as significant as they once were, especially with the widespread use of toothpaste that includes fluoride ...

Robert F. Kennedy Jr. waded into another scientific debate on Saturday by saying Donald Trump’s administration would advise that fluoride be removed from the country’s water supplies if the former ...