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Recommended 8 Cups a Day for Average Adult...

Is it accurate to say that an "average" adult needs 8 cups a day to stay healthily hydrated... when you drink coffee, soda, drinks with some salt content, alcohol, etc.?

From what I understand, coffee, soda, etc. count towards the 8 cup count. But, if it dehydrates you, then wouldn't you need more water? Is it negligible? Or, how many more cups of water would you have a drink to compensate for it?

This assumes an "average" adult who needs precisely 8 cups of water per day.

Thanks in advance.
Best Answer
7721494 tn?1431627964
Maybe half of that cup of coffee gets squeezed through the kidneys prematurely -- the caffeine in coffee is a semi-effective diuretic.

A diuretic promotes the production of urine, but if we pass too much water, our body suffers from an imbalance of electrolytes.

Alcohol is another diuretic.

The sodium in soda pop makes you retain water -- again, electrolyte imbalance.

Water, fruit juice, vegetable juice -- always good choices. This is what they mean by 8 cups a day. That's a lot -- if you drink 6 cups a day, you'll be fine. And enjoy your coffee, but don't count it as a cup of fluid.
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Avatar universal
Oh gotcha. So, does drinking one cup of coffee nullify the water in that coffee, and therefore, one additional cup of water will be needed to count towards the recommended daily water intake?
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7721494 tn?1431627964
There's no need to remove the question -- I was only curious as to why you posted here, but then I noticed you had a prior question about your spine.

I'd consider this question to be one of general nutrition, and there are forums here at MedHelp where you may get more complete answers.

I hope that my answer confirmed your suspicion -- not all fluids are equal when it comes to hydration.

Drinking plenty of fluids is a good idea to maintain normal body function, but when medical people speak of "fluids" we are referring to one essential fluid - clean water.

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Avatar universal
Whoops.

How do I get an Admin / moderator to move this thread?
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7721494 tn?1431627964
Some liquids have a diuretic effect, so when you drink then, you are actually losing more water than you take in.

Alcohol does this. So does coffee.

Here's the real mystery:

Why ask this question in the spine forum?
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