Fluoride
Supports dental health by strengthening tooth enamel and preventing cavities.
Recommended Daily Allowance (RDA)
Daily Requirements by Life Stage 16 groups
| Life Stage | RDA / AI (µg/day) | Upper Limit (µg/day) |
|---|---|---|
| Children 1-3 years | 700 * | 1,300 |
| Children 4-8 years | 1,000 * | 2,200 |
| Males 9-13 years | — | — |
| Females 9-13 years | — | — |
| Males 14-18 years | — | — |
| Females 14-18 years | — | — |
| Males 19-30 years | 4,000 * | 10,000 |
| Females 19-30 years | 3,000 * | 10,000 |
| Males 31-50 years | — | — |
| Females 31-50 years | — | — |
| Males 51-70 years | — | — |
| Females 51-70 years | — | — |
| Males 70+ years | — | — |
| Females 70+ years | — | — |
| Pregnancy | — | — |
| Lactation | — | — |
* = Adequate Intake (AI) where no RDA established
Top Foods Highest in Fluoride
Amount per 100g serving. Values in µg per 100g.
Foods Highest in Fluoride (Table)
Health Effects of Fluoride
Fluoride strengthens tooth enamel through remineralization and inhibits bacterial acid production in dental plaque. It also contributes to bone mineral density.
Insufficient fluoride is associated with increased dental caries. No systemic deficiency syndrome is recognized.
Excess fluoride during tooth development causes dental fluorosis (white spots to brown staining). Chronic high intake can cause skeletal fluorosis with joint stiffness and pain.
Absorption & Interactions
Rapidly and almost completely absorbed from the stomach and small intestine. About 50% is deposited in bones and teeth; the remainder is excreted by kidneys.
Other Minerals
Frequently Asked Questions
How much Fluoride do I need per day?
Adult males need 4,000 µg/day and adult females need 3,000 µg/day.
Which food has the most Fluoride?
The food highest in Fluoride is Duck, domesticated, meat and skin, raw with 1,000 µg per 100g.
What does Fluoride do in the body?
Supports dental health by strengthening tooth enamel and preventing cavities.