However, in another study,21 there was a change in serum Mg
levels in which the maximum benefit occurred at 100 ppm F whereas 200 ppm
showed marked toxicity when Mg was deficient. Mg deficiency in animals reduces
production of energy relevant to the Mg-ATP system,12 and this may be the reason
that, in the present study, we found that weight loss in the F group 2 was
significantly higher than in the F+Mg group