8 glasses of water a day? Not so fast

Researchers from the University of Pennsylvania combed the medical literature for studies on water and found no convincing evidence anywhere that people need eight glasses of water a day. Likewise, there is nothing to prove water helps weight loss or improves skin tone. A lack of water doesn't seem to trigger headaches, either.

Researchers say there might be some health benefits to water that are yet to be discovered. But for now, our so-called water facts are melting away faster than ice on a hot summer's day.


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