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A 33-year-old member asked:

How many milligrams of fluoride a day would a child need to swallow to develop fluorosis?

2 doctor answers2 doctors weighed in
Dr. Jay Park
Dr. Jay Parkanswered
Pediatrics 51 years experience
Too much fluoride: Daily intake level over 1 mg/kg/day in children up to age 8 results in fluorosis. For children older than 8 years, upper limit has been set at 10 mg per day.
Dr. Alan Levine
Pediatrics 35 years experience
Depends......: Depends on the age and amount of Fluoride in the water. Recommended upper limits in water without added Fluoride are: 6mos-3yrs: 0.25mg/day; 3-6yrs 0.5mg/day; 6-16 yrs. 1.0mg/day more than that on a regular basis would increase the risk of developing fluorosis. The usual upper limit would be above 5.0ppm.

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Last updated Jun 25, 2014

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