Drinking water on an empty stomach could be… what?
This is usually a clickbait health headline. Drinking water after waking up is perfectly reasonable, but there is no special medical effect that occurs simply because your stomach is empty.
What it can actually do
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Rehydrate you: You haven’t had fluids while sleeping, so water helps restore hydration.
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Support digestion: Adequate fluid intake helps keep stool softer and may help prevent constipation.
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Help you feel full: Drinking water before a meal can temporarily increase fullness and may modestly reduce food intake.
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Support normal kidney function: Your kidneys need adequate fluid to perform their normal functions.
What it doesn’t do
There isn’t good evidence that drinking water on an empty stomach:
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“Flushes toxins” from your body
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Melts belly fat
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Cleanses your kidneys or liver
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Cures ulcers or acid reflux
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Dramatically boosts metabolism
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Removes years of accumulated waste
Your kidneys and liver already handle waste removal continuously.
How much should you drink?
You don’t need to force down several glasses immediately after waking. Drink normally throughout the day according to thirst and your individual needs. If you’ve been told to restrict fluids because of a heart, kidney, or liver condition, follow your clinician’s instructions instead.
Bottom line: A glass of water in the morning is a healthy habit if you enjoy it, but the empty stomach isn’t what makes water beneficial. The important thing is getting adequate fluids over the course of the day.
