Someone claimed coffee is a Diuretic and that drinking it dehydrates you.
My impression was it may be a diuretic, but the effect is not more than the water required to brew, so drinking a cup is still a net positive of hydration.
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Yes caffeine causes you to pee more, but the overall effect is very less, that it’s not even a concern(dehydration, I mean)
Caffeine cause dehydration by allowing more sodium to leave your body, which results in extra water to go along with it, hence it’s a diuretic.
But the effect is so moderate that it’s not a concern as it would be due to other causes.
Hope this helps, feel free to ask questions.
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