MadSci Network: Medicine |
Distilled water is water that has been vaporized and recondensed and contains no dissolved minerals, such as chlorine, fluorine, iron or calcium. Some of those minerals are beneficial for you, but if you are eating foods that contain them, there is nothing wrong with drinking distilled water. Bottled and tap water are very similar to each other--they come from either surface water or ground water and are equally likely to be contaminated. (Actually, it is that they are equally likely to not be contaminated, since our city water supplies are very unlikely to be contaminated). The Food and Drug Administration regulates bottled water and requires that it meet the same standards as city water. Bottled water may taste different from tap water because the most bottling companies use ozone to disinfect their water while most cities use chlorine to disinfect their water. Ozone doesn't leave a taste in the water like chlorine does. However, some bottled water is simply city tap water that has been put into a bottle. Bottled water is also usually low in fluorine, so if you are drinking bottled water, be sure to talk with your dentist about getting enough fluoride to have healthy teeth. If you are going to drink bottled water, look for the trademark of the International Bottled Water Association (IBWA). Members of this organization support the FDA regulations for safety of bottled waters. (F. Sizer and E. Whitney, Nutrition--Concepts and Controversies, 2000) In summary, it doesn't really matter whether you drink distilled, bottled or tap water. None of them are unhealthy. The most important thing is to drink lots of water (at least 8 glasses a day), regardless of where you get it.
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