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      By Anastasia Ugwuanyi, University of the Witwatersrand   Dehydration is a big issue during unusually hot weather and outbreaks of diseases such as cholera that lead to life-threatening diarrhoea. Anastasia Ugwuanyi is a family physician and clinical educator at the University of the Witwatersrand. We asked her four questions designed to be useful in avoiding or managing dehydration. What causes dehydration? Dehydration can be defined as loss […]