How well do different drinks hydrate?

This study was sponsored by the European Hydration Institute and undertaken by teams at the University of Stirling, Loughborough University and Bangor University.

Phase one aimed to investigate the effects of 13 commonly-consumed drinks on urine output, and therefore fluid balance, when ingested in a euhydrated state, with a view to establishing a Hydration Index.

Phase two involved three separate studies to investigate the relative influence of individual drink components (carbohydrate, sodium, and caffeine) on the Hydration Index and net fluid balance.


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