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Journal of Nutrition Vol. 96 No. 1 September 1968, pp. 152-156
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Effect of Dietary Fluoride on Food Intake and Plasma Fluoride Concentration in the Rat1

Gad Simon2 and J. W. Suttie

Department of Biochemistry, University of Wisconsin, Madison, Wisconsin

The effect of excessive amounts (200–600 ppm) of dietary fluoride on the food intake and plasma fluoride concentration of rats of various ages was investigated. In older animals, the decline in food intake was partially corrected within a week even though the plasma fluoride concentration remained elevated. When the same amounts of fluoride were fed to younger animals, a longer exposure to the diet was required before an improvement in food intake was seen. The ability of the rat to increase its consumption of the high fluoride diet following an initial drop in consumption suggests some type of adaptation to the elevated plasma and soft tissue fluoride concentrations.

1 Supported in part by a research grant from the Aluminum Company of American, the Aluminum Company of Canada Ltd., the Kennecott Copper Corporation, the Monsanto Chemical Company, the Ormet Corporation, the Tennessee Valley Authority, the Victor Chemical Works, Reynolds Metals Company, the Kaiser Alurninum and Chemical Corporation, the Harvey Aluminum Company, the U. S. Steel Corporation of Delaware and the Tennessee Corporation.

2 Present address: Israel Institute for Biological Research, POB 19, Ness Ziona, Israel.

Manuscript received 27 March 1968.




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