Fluoride levels in UK infant milks

Area of Science:

• Environmental Health
• Pediatric Nutrition
• Analytical Chemistry

Background:

• Infant milk is a primary nutrition source for infants.
• Fluoride intake is crucial for dental health but excessive amounts can cause fluorosis.
• Understanding fluoride content in infant milk is essential for assessing infant exposure.

Purpose of the Study:

• To quantify fluoride concentrations in various UK infant milk products.
• To estimate the contribution of these milks to an infant's daily fluoride intake.
• To assess the potential risk of dental fluorosis from infant milk consumption.

Main Methods:

• Analyzed 60 infant formula products and 8 cow's milk samples.
• Reconstituted formula with Leeds tap water (0.02 ppmF).
• Measured fluoride using an ion-selective electrode.

Main Results:

• Median fluoride concentration in infant milks was 0.025 ppmF (range: 0.002-0.282 ppmF).
• Hospital-prepared formulas had higher fluoride (0.029 ppmF) than commercial (0.016 ppmF) or cow's milk (0.017 ppmF).
• Estimated daily fluoride intake from infant milk was low (0.0034 mgF/kg/day for 0-6 months).

Conclusions:

• Infant milks in the UK have low fluoride concentrations.
• Contribution to total daily fluoride intake is minimal.
• Unlikely to pose a risk for dental fluorosis development.