Why does coffee make you dehydrated when the base ingredient is water, yet drinking water on its own afterwards does the opposite?
In: Chemistry
Your kidney produce around 200 litres of urine every day, but your body just absorbs most of it, and only a bit actually enters your bladder. There’s certain substances, such as beer, apple juice or coffee that mess with this absorbtion process, which means your bladder gets filled with more liquid/you pee out more than you actually drank, and thus you dehydrate
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