It is a very common idea: drinking lots of water would "cleanse" the body by helping the kidneys to eliminate toxins.
Of course, water is essential for the proper functioning of the human body - approximately 60% of it is made up of it.
But for all that, it does not have the therapeutic powers that are attributed to it.
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“A
lot of people think that by drinking a lot they will cleanse themselves well, but in reality that does not change their health.
When you drink a lot of water when you don't need it, you eliminate it by urinating more, that's all,
”explains Professor Stéphane Burtey, professor of nephrology at Aix-Marseille University.
Thirst, a very effective warning
In practice, the amount of water that we instinctively drink is the one that best meets our needs.
"
We are well calibrated to naturally manage our water intake, thanks to thirst which is a powerful stimulus
", explains Pr Burtey.
“This sensation starts long before the body runs out of water.
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