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MYTHS AND PURPORTED HEALTH EFFECTS A popular myth about distilled water is that it has the dangerous property of being more easily heated above its Boiling Point without showing the normal characteristics of boiling. This is called Superheating . When the superheated water is disturbed or has impurities added to it, a sudden, explosive boil occurs, possibly causing serious injury to anyone near it. In fact, superheating of plain tap water, for instance in the microwave, is just as great a danger as when heating distilled water. In the popular Discovery Channel show "Mythbusters," an experiment was conducted where distilled water was placed in a microwave oven for several minutes long enough to boil, but no convection (boiling bubbles) took place. When a contaminant (a sugar cube) was added to the superheated water, it had an explosive effect. However, this effect also occurs with normal tap water, as macroscopic impurities (especially those which carry air bubbles) are needed for boiling to start. The dissolved impurities in tap water are not enough to inhibit the superheating. The drinking of distilled water has been both advocated and discouraged for the purported effect of drinking water in its pure form is a 'more powerful solvent' that helps cleanse toxins from the body. Detractors argue that it robs the body of essential minerals in this way and also deprives it of minerals normally acquired from drinking water. There is no evidence to support either view and neither argument has a sound basis in Chemistry or Biology . PROBLEMS OF VERY PURE WATER It has been suggested that because distilled or reverse osmosis produced water lacks and this is thought to potentially provide sufficient fluoride to maintain normal Prophylaxis in many instances. Any other minerals in tap water such as Calcium and Magnesium are present in such minuscule amounts that their absence is compensated for many thousands of times over by other dietary sources. SEE ALSO
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