We can see which kids are in a state of negative fluoride balance
from following the existing fluoride schedule. This shouldn't be hard to guess, it is the infants getting no fluoride. The
group 1 infants are getting breast milk and nothing else.
In the new schedule, we will treat lots of children
just like this group 1. There are no supplements given to ANY infants under age 6 months. So the only way they can get fluoride
is to be using formula, and in such a way that mixes fluoridated water with it. All breast fed children will be in negative
In the last schedule it was fewer children, the children
living with fluoridated water, but getting none of it because they were breast fed.
We can also see which kids are over the threshold of fluorosis,
also from following the schedule, and also not a surprise. These are the kids getting powdered formula made with fluoridated
water, group 3 in the graph.
Group 2 is the closest to optimum, but they are a little
high in my opinion. They are getting fluoride from 2 sources, either one of which would probably be fine alone. They are getting
a .25 mg F supplement (these were 4 mo old infants, the average supplement dose was .041 mg/kg) AND fluoride in their formula
of .026 mg/kg on average.
Minor fudge factor alert: I calculated the food intake
by the difference in total F (avg .045) and supp F (avg .041), to get one feeding's worth, and multiplied that times 6 feedings
per day. That's where my .026 mg/kg from F in food comes from. I may be off, but note that as a group these guys are a good
bit higher than would be expected. That is, if you drew a line from group 1 to group 3, it would go under group 2 instead
of through the center of it. The intake that is given and plotted is just from the 1 feeding, not from the rest of the day.
But I think their urine shows the effect of their daily intake. Group 2 would fit the graph better if you scooted them over
to the right by about .02, which is about the food F intake not given and plotted.
(I originally made this graph wondering if we could use
urine levels to check the intake of kids. I'm satisfied that we can. One of these
days I hope to do a little study in which the mom saves the pee from a few diapers. Then the pediatrician could have a lab
check the F level, and, if it was out of the optimum range, make an adjustment in feeding or supplementation. Then we'd check
the level again. I'll have to get a few new droppers made first, droppers that would allow even more precise dosing. Let me
know if you'd like to participate when the time comes.)