Aren’t you still drinking the water?
In: 3
Caffeine makes you pee ,supposedly you’d need to drink one after another to actually cause any real dehydration effects
It’s not, caffeine is a diuretic which means you’ll pee more compared to if you didn’t have it (generally), but it will still hydrate you – just to a slightly lesser extent.
Caffeine is a diuretic, which causes you to need to urinate. Urine is the body pulling water from the system to expel things. If you were to drink very, very highly caffeinated coffee it could trick your body into expelling more water than it was absorbing from the coffee itself, leading to dehydration. This is a more extreme case, in general coffee will hydrate you more than it dehydrated you.
It’s a false understanding. There is a belief that caffeine is a diuretic (i.e. it makes you pee more and dehydrates you), but it is at most a very mild one and studies show coffee drinkers are not more dehydrated after drinking coffee. What’s really going on is likely that coffee is bitter from compounds called tannins (they’re also in things like tea and red wine), which leaves the mouth feeling dry.
*Caffeine* is, technically, dehydrating.
Coffee has a little bit of caffeine and a whole lot of water. It is not dehydrating overall.
Every actual study on this (I’ve read three, two with coffee and one with tea) has shown that it’s not dehydrating. It does cause an increase in GFR and overall urination, but that’s offset by the actual water in the coffee or tea.
Overall, coffee (and tea) provide net hydration.
Latest Answers