The idea that if you are thirsty then you are already dehydrated has no basis in fact. The human body is well designed to manage its water needs, and if you drink when you are thirsty, then you are likely getting enough fluids. Goldfarb notes, “Thirst is a highly developed sensation, powerfully motivated. When you’re thirsty, all you want to do is drink. But being thirsty doesn’t mean you are ill at this point or dehydrated to the point that there are consequences.”
Americans drink over 9 billion gallons of bottled water each year, up from 5 billion in 2001. However, most Americans still believe that they go through life chronically dehydrated. At least, that is what we have been led to believe by certain experts and bottled water companies who have suggested that everyone drink eight glasses of water a day for the sake of their health. However, that advice has no basis in scientific evidence, according to Scottish physician Dr. Margaret McCartney, who says that the need to drink that much water to prevent dehydration is “not only nonsense, but is thoroughly debunked nonsense.”
It is easy to find articles all over the Internet on the health benefits of drinking more water. From better skin to weight loss, all manner of health improvements have been attributed to drinking eight glasses of water a day. But according to Dr. Stanley Goldfarb, a…
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