0 The New Complete Book of Food
Stained teeth. In some parts of the American Southwest, the groundwater is naturally fluo-
ridated to concentrations as high as 10 ppm. Long-term consumption of water with fluoride
concentrations higher than 2 ppm may discolor or stain your teeth.Food/Drug Interactions
Diuretics. Diuretic drugs increase the loss of electrolytes through frequent urination. Check
with your doctor for precise information regarding fluid requirements while you are taking
these medications.