Let's Settle This ― Does Coffee Actually Dehydrate You?
Hand holding a cup of coffee
When I’m sweating like a pig and panting like a dog in spin class, the last thing I want to sip on is a hot cup of Java.
That might be why the common “coffee dehydrates you” belief is so easy to subscribe to ― there’s something about the slightly bitter beverage that feels drying, rather than hydrating, isn’t there?
After all, coffee is a known diuretic (like a laxative, but for pee), especially in high doses.
If the drink makes you lose water and is less thirst-quenching than regular H2O, it makes sense that you’d become more dehydrated the more you drink, right?
Possibly, slightly ― but only at very high levels
Though coffee does make us visit the loo more often, experts think that’s more than covered by the fact that, well, coffee is made with lots of water.
One 2014 paper found that “moderate” coffee drinking (in this case, 800ml a day drunk by adult men) is about as hydrating as water.
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