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Fluoride intake in early infancy
1Dows Institute for Dental Research, College of Dentistry, University of Iowa, Iowa City 52242.
Insights
Current infant formula regulations lack fluoride limits. An upper limit of 0.06 mg per 100 kcal is recommended for infant formulas, with water dilution being a key factor in infant fluoride intake.
Area of Science:
- Pediatric Nutrition
- Environmental Health
- Food Science
Background:
- Current infant formula regulations do not establish specific lower or upper limits for fluoride content.
- Fluoride intake is crucial for infant dental health but requires careful management to prevent fluorosis.
- The primary source of fluoride in prepared infant formula is the water used for dilution.
Purpose of the Study:
- To evaluate the necessity of establishing fluoride content limits in infant formulas.
- To propose a recommended upper limit for fluoride in infant formulas.
- To identify key factors influencing infant fluoride exposure from formula.
Main Methods:
- Analysis of existing infant formula regulations regarding nutrient content.
- Assessment of achievable fluoride levels in commercially available infant formulas.
- Review of data on fluoride content in various water sources used for formula preparation.
Main Results:
- No need identified for a lower limit of fluoride in infant formulas.
- An achievable and recommended upper limit for fluoride content is 0.06 mg per 100 kcal.
- Water used for diluting infant formula significantly impacts total fluoride intake.
Conclusions:
- Establishing an upper limit for fluoride in infant formulas is advisable.
- The recommended upper limit of 0.06 mg per 100 kcal is practical and protective.
- Focusing on the fluoride content of diluent water is critical for managing infant fluoride exposure.
Abstract:
Current regulations concerning nutrient content of infant formulas do not specify either a lower or an upper limit for fluoride content. There would appear to be no need to specify a lower limit. An upper limit of 0.06 mg per 100 kcal is achievable and is recommended. Intake of fluoride by the infant will be influenced more by the water used as a diluent than by the concentrated liquid or powder used in formula preparation.