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Author Topic: What is worst for dehydration?  (Read 2112 times)

Offline Jenguin

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What is worst for dehydration?
« on: 23/06/2010 12:30:02 »
Jennifer Valsler asked the Naked Scientists:
   
Drinking 8 pints of water per day is boring and so we all turn to
squash and soft drinks for our daily intake of the necessary
substance.

As these drinks contain sugars, however, how much does this
negatively impact on our water uptake? Are diet versions better or do
their sweeteners hold more problems?

Then, when it comes to alcohol, I've heard that anything less than 10%
is a net "hydrater" but what about when you mix spirits with tonic, coke
and the like? What is the ratio you need to ensure a headache-free
morning?

Thanks!

Best wishes,
Jen

What do you think?
« Last Edit: 23/06/2010 12:30:02 by _system »


 

Offline Pwee

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What is worst for dehydration?
« Reply #1 on: 23/06/2010 14:13:19 »
I think you will have to conduct a kichen scinece experiment to make sure you get the right mixture.
 

Offline Bored chemist

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What is worst for dehydration?
« Reply #2 on: 23/06/2010 19:14:50 »
"As these drinks contain sugars, however, how much does this
negatively impact on our water uptake?"
It doesn't. All the water gets absorbed and so are the sugars.

"What is the ratio you need to ensure a headache-free
morning?"
It depends, if you don't drink much then straight spirits are not a problem. If you drink lots then it doesn't really matter much water there is in it, the alcohol will get you.
 

Offline peppercorn

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What is worst for dehydration?
« Reply #3 on: 23/06/2010 20:00:21 »
This magic 8-pints rule is likely to be an average across population.  Take into account your lifestyle, age, etc.
Additionally, the original guidance is misquoted as the researcher who made this statement also said that a significant amount of this figure is gained through foods on average.
 

Offline MayoFlyFarmer

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What is worst for dehydration?
« Reply #4 on: 29/06/2010 19:19:10 »
was also going to point out that the 8-glass per day rule is a bit of an exageration (not taking into account all the water that is in foods and other beverages we consume).

as far as the hydrating effects of beverages other than water, sugar shouldn't affect the absorbtion of water, its just there in addition.  SOME additives, though, WILL actually dehydrate you and thus affect the net effect of the water you are intaking.  Caffein and alcohol are the best two examples of these, but I've heard carbonation also has a dehydrating effect on the body, though i don't know by which mechanism.  Also, certain salts/electrolytes can actually HELP the body retain more of the water that you take in.  This is usually only omortant if you are either actively losing large quantities of salt through sweating, or are trying to super-hydrate yourself.
 

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What is worst for dehydration?
« Reply #4 on: 29/06/2010 19:19:10 »

 

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