Fluoride occurs naturally in the body as calcium fluoride, which is mostly found in bones and teeth. Small amounts of fluoride help reduce tooth decay, especially in children, and may be used to treat conditions (such as menopause) that cause faster-than-normal bone loss.
Natural sodium fluoride is found in the ocean, so most seafood contains fluoride. Tea and gelatin also contain fluoride.
NOTE: Almost all water contains some naturally occurring fluoride, but usually at levels too low to prevent tooth decay. Many communities choose to adjust the fluoride concentration in the water supply to a level beneficial to reduce tooth decay and promote good oral health. This practice is known as community water fluoridation.
« Sources of fluoride have increased since the early 1960s when drinking water, food, and beverages prepared with fluoridated water accounted for nearly all fluoride intake. Today, other sources include tooth-paste and mouth rinses, prescription fluoride supplements, and professionally applied fluoride products such as varnish and gels.