How much Fluoride should I take daily?

Introduction

Fluoride intake is an important consideration for dental health, with specific recommendations varying by age, dietary habits, and local water fluoridation levels.

Key Insights

Toddlers aged two years in areas with fluoridated water (0.37 to 1.04 ppm) have an average fluoride intake from food, water, and beverages ranging from 0.315 to 0.610 mg/day.
Male adolescents aged 15-19 years in fluoridated cities (>0.7 ppm) consume on average 1.85 mg/day of fluoride, while those in non-fluoridated cities (<0.3 ppm) consume 0.86 mg/day.
Infants up to 6 months of age have a maximum fluoride intake of 0.127 mg/kg body weight per day, with the intake being substantially lower for those consuming human or cow's milk in non-fluoridated areas.
The dietary fluoride intake for infants increases with age, from 0.32 mg/day at 1-4 weeks to 1.23 mg/day at 4-6 months, with per kilogram body weight intake ranging from 0.07 mg/kg to 0.16 mg/kg.
Healthy adult men on a basal diet without supplements have a negative fluoride balance of -0.46 mg/day, while those with a 10 mg/day fluoride supplement have a positive balance of +2.58 mg/day.
The average daily fluoride intake per kilogram body weight from optimally fluoridated tap water declines from 0.080 mg/kg/d at 7-9 months to 0.034 mg/kg/d at 12.5-13 years, with supplementation schedules generally aligning with these intakes after the third month of life.
An adult fluoride intake of 1.8 mg per day is recommended to meet the requirements of health volunteers, with a homeostatic dose range of 1.5-1.8 mg and no advisability for higher levels up to 4 mg/day.
Full fluoride dosage (0.25 mg/day) is recommended for completely breast-fed babies, but if an infant consumes around 8 oz per day of 1 ppm fluoridated water, no additional fluoride supplementation is necessary.

Conclusion

The recommended daily fluoride intake varies with age, diet, and local water fluoridation. For toddlers, it ranges from 0.315 to 0.610 mg/day, while male adolescents in fluoridated areas consume around 1.85 mg/day. Infants have a maximum intake of 0.127 mg/kg body weight per day, which increases with age. Adults are recommended to have an intake of 1.8 mg/day. Breast-fed infants may not require supplementation if they consume fluoridated water. These recommendations aim to balance the benefits of fluoride for dental health with the risk of dental fluorosis.

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How much Fluoride should I take daily?

Summary

Introduction

Key Insights

Conclusion

Sources and full results

Estimated Fluoride Intake of Average Two-year-old Children in Four Dietary Regions of the United States

An average two-year-old child in cities with water containing 0.37 to 1.04 ppm of fluoride has a daily fluoride intake of 0.315 to 0.610 mg/day from food, water, and beverages.

Dietary Fluoride Intake of 15-19-year-old Male Adults Residing in the United States

In fluoridated cities, 15-19-year-old males have an average daily dietary fluoride intake of 1.85 mg/day, while in non-fluoridated cities, they have an average daily intake of 0.86 mg/day.

Total fluoride intake of infants.

Infants up to 6 months of age should not exceed 0.127 mg of fluoride per kilogram of body weight per day, regardless of whether they consume human milk or cow's milk and live in communities with fluoridated water.

Dietary fluoride intake of infants.

Infants aged 1 to 6 months have a dietary fluoride intake of 0.32 mg/day in the first 4 weeks, increasing to 1.23 mg/day in the next 4 months, and 0.16 mg/kg in the 6-month-old infant.

Fluoride balance studies in healthy men during bed rest with and without a fluoride supplement..

A daily 10 mg fluoride supplement did not protect against bed rest-induced calcium loss or cause any clinical or laboratory abnormalities in healthy men.

The average daily dose of fluoride: a model based on fluid consumption.

The optimal daily dose of fluoride for children is 0.068 mg/kg/d from optimally fluoridated tap water, with supplementation not exceeding this dose.

[The hygienic validation of the recommended values for fluoride consumption for the adult population].

The recommended fluoride intake for adults aged 40+ is 1.8 mg per day, with a range of 1.5-1.8 mg, and higher intake levels (up to 4 mg/day) have no medical or biological benefits.

Breast Milk and Fluoride

Infants who are completely breast-fed should not receive fluoride if they drink 8 oz per day of 1 ppm water, as no significant amounts are passed in breast milk.

Evaluation of the total fluoride intake of 4-7-year-old children from diet and dentifrice.

Dentifrice is the main source of fluoride intake in 4-7-year-old children, with one-third exposed to a dose above 0.07 mg/Kg body weight, suggesting a need for increased fluoride intake in children.

Dietary fluoride intake of 6-month and 2-year-old children in four dietary regions of the United States.

Infants and toddlers in most cities with high fluoride levels have dietary fluoride intake within the optimum range, but ingestion of fluoride-containing dentifrice or milk formula diluted with fluoridated water may lead to higher intake levels.

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