nutrient
Fluoride
A mineral ion that supports tooth enamel resistance and contributes to mineralised tissue.
Educational draft · Human scientific and editorial review pending. About review status
Fluoride exposure comes from water, foods, toothpaste and other sources, not only from dietary supplements. Total exposure is therefore context-dependent.
How it works
What it does
Fluoride can be incorporated into mineralised tissues and helps make tooth enamel more resistant to acid dissolution. Its dental effect depends on repeated local exposure as well as intake, so a food amount alone cannot capture total exposure.
Where it comes from
Drinking water, tea, seafood and fluoridated dental products contribute differently by location and use. The AI describes total dietary intake.
Roles and processes
Fluoride is incorporated into mineralised tissue in Bone
Fluoride can be incorporated into mineralised tissue and helps tooth enamel resist acid dissolution.
Evidence: Established · Source checked 2026-09-05 · Sources: NIH Office of Dietary Supplements: Fluoride: Fact Sheet for Health Professionals
Worth knowing
Water changes the comparison. Local drinking-water concentrations and dental-product use affect fluoride exposure. A food table captures only part of that picture.
A closer look
Excess-exposure safety
Excess fluoride during tooth development can cause fluorosis, while very high acute exposure is harmful. Age and local water context matter.
Local contact and absorbed intake are different
Fluoride’s enamel effect depends on repeated local contact as well as absorbed intake. Water, toothpaste and other dental products can therefore matter even when a food record is unchanged.
References
Source-checked local draft.
Human editorial review pending.