The retention and elimination of fluorine in bones

Abstract

The fluorine contents of human bones of different ages were compared spectrographically and detd. chemically. There is in general a rise of F content with increase of age. The lowest value was 0.02% and the highest recorded here, with no evidence of fluorosis, was 0.3%. Rats fed 4.7 parts F per million of diet as NaF take up F in the bones, the conc. of F being roughly proportional to logarithm of age. After withdrawal of the F from the diet the elimination from the bones is the inverse of the uptake.