The thing quoted is an idiot, a fool, an incompetant or a charleton - or some combination of the above. The only correct thing in his blather is that there is a stomach and it does contain HCl.
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How much water is it safe to drink per day?
- Thread starter Kuko 4000
- Start date
Dancing David
Penultimate Amazing
That is probably true for the higher speed connections as well, Google(plain old Google enter JREF and the thing you want to search) is a good way to search the recent forum.
ponderingturtle
Orthogonal Vector
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- Jul 11, 2006
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Is that all she drinks? Adding 2 liters of water on top of a sufficient ammount of water from other drinks could be too much.
Is she forcing herself to drink water or not? Most people want to drink appropriate amounts of fluids naturally.
Tiktaalik
Half True Scotsperson
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- Sep 29, 2006
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Loveland? That's like, the Front Range, right? I'm 6-7 hours from Denver depending on weather...
The little community nearest me actually has DSL, but nobody is going to run it up to the 12 people & 11 dogs & cats that live up my road, about 2 miles out of town. Someday I'll go satellite...
So as not to derail, I'll add something relevant:
In the past few years, people hiking in parks & forests in the southwest, in arid, hot summer climates, have really gotten the message that they need to drink water. Now the problem is, people are drinking so much water, and forsaking eating, that they are getting hyponatremia.
IANAPhD, but:
There are two different forms of hyponatremia, which basically occurs when you dilute the electrolyte balance in your bloodstream so that the correct proportions of electrolytes, minerals, etc., aren't there, which can be detrimental to your muscles, including heart, and brain function.
In the first form, say you are a firefighter and you run in and work very hard in a very hot environment for a relatively short time period. You recognize you are sweating a lot and drink a large amount to counteract that, but don't eat. Later, you get acute hyponatremia - which can often be cured by eating, peeing, and resting for a few days.
In the second form, say you are a construction worker on a hot roof. Every day you drink a little more water than you need, but in the evening you eat enough to almost make up for it, but not quite. So there is this undulating graph-line of blood electrolytes, with a downward trend. Eventually you end up with hyponatremia, and this kind is harder to cure and can kill you (not sure why).
So the over-drnking lady could be slowly putting herself into hyponatremia...
CORed
Penultimate Amazing
I would like to suggest a radical new approach to determining how much water to drink: Drink water when you are thirsty, and stop when you feel like you've had enough. Amazingly enough, millions of years of evolution have equipped your body to signal you when it needs water and when you have had enough. I have found that this revolutionary technique works when I am exercising intensely or when I'm sedentary.
casebro
Penultimate Amazing
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When I'm worried about my hydration, it's usually when I've submerged myself in some heavy work. Zen and not paying attention to my thirst? Finally I'll be hopping around trying not to wet my pants. At those times I make sure I drink enough to pass clear, not yellow, urine. I figure If I'm flushing out my system once a day to the point of clarity, I'm not building up any harmful amount of by-products. Some urine-manaics think they have to never ever pass yellow urine, but I think that is extreme.
Water does not 'flush' anything out of your system. Substances are removed by the kidney and placed in the urine independently of the system that removes water and places it in the urine (which occurs in a different part of the kidney). The only reason your urine appears less yellow is because it contains all the excess water that you have drunk. The absolute amount of harmful by-products passing into the urine is unchanged, it is merely diluted.
Linda
rjh01
Gentleman of leisure
I think you are both right. It is not about getting rid of toxins. It is making sure that you are not dehydrated. Drinking enough so that you pass clear urine once a day will ensure that.
The problem with drinking until you are not thirsty is that it can be hard to tell the difference between feeling hungry and thirsty. Or ignoring such feelings entirely. Yellow urine is a feedback method between my kidney and me.
The problem with drinking until you are not thirsty is that it can be hard to tell the difference between feeling hungry and thirsty. Or ignoring such feelings entirely. Yellow urine is a feedback method between my kidney and me.
Modified
Philosopher
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And unfortunately, a salt imbalance can make you feel something that is very close to thirst.
You realise if you tart that up with some buzzwords like "quantum" you have the basis of a diet book and a possible career as a nutritionist guru?
I drink probably close to a gallon of liquid a day when all is said and done. I dunno why, I just hate having dry lips and so when I feel thirsty or have a dry mouth I drink.
Never really hurt me. I don't try to chug it or do it all in 2 hrs or something.
Never really hurt me. I don't try to chug it or do it all in 2 hrs or something.
Is there a scientific basis for your belief that yellow urine is a bad sign?
rjh01
Gentleman of leisure
If you are after a double blind test on the subject, good luck.
However a quick google on "Yellow urine" dehydration (quotes included) came up with heaps of hits. These include
http://en.wikipedia.org/wiki/Urine
http://www.kenkifer.com/bikepages/health/tired.htm
Dehydration is caused by not drinking enough fluids. Hot and dry or hot and humid weather and a hot sun can cause rapid fluid loss. The symptoms are thirstiness, dizziness, and a washed-out feeling, although sometimes thirst is suppressed. Drink lots of fluids, especially water, wet your clothing, and get some rest out of the sun. A myth is that yellow urine indicates dehydration: yellow urine is caused by vitamins and other dissolved solids, not dehydration. Waiting until you need to urinate or even until you get thirsty is unwise; make a habit in hot weather of sipping water constantly and of stopping for drinks frequently.
See also
http://wiki.answers.com/Q/Is_bright_yellow_urine_normal
In multisport events, especially half and full ironman, hyponatremia is a very real problem and at least one or two people get hospitalised for it in most large events.
Pro multisport athletes are basically volunteer guinea pigs for the effect of under- and over-hydration. I'd suggest you go to some triathlon and ironman sites and look at their recommendation of hydration & sodium/electrolyte replacement based on the amount/intensity of exercise (if any) your friend is doing.
http://ironman.com/holdingcell/2005...trition-planning-ahead-makes-a-big-difference
Pro multisport athletes are basically volunteer guinea pigs for the effect of under- and over-hydration. I'd suggest you go to some triathlon and ironman sites and look at their recommendation of hydration & sodium/electrolyte replacement based on the amount/intensity of exercise (if any) your friend is doing.
http://ironman.com/holdingcell/2005...trition-planning-ahead-makes-a-big-difference
Is this quote based on science, or just a statement of common belief?
The quote you provided is not backed up by citations or footnotes. Wikipedia even warns us about that at the top of the article. It also implies that drinking caffeinated beverages doesn't count. That is a widely held belief, but it has been shown that the type of beverage doesn't really affect hydration levels. Given this, we should probably look elsewhere for a scientific explanation.
The other two links you provided suffer from the same problem.
Searching the web for actual science can be rather frustrating with this kind of question.
autumn1971
Illuminator
Ya know, if I ever engage in an activity that makes me seriously consider if my body's signals may be causing me to inadvertantly kill myself, I STOP DOING THAT THING.
Really.
nzric, if there are actually that many people being hospitalized during triathalons, then triathalons are at least as serious a public health problem as heroin addiction, and should probably be stopped. And marathons? Has anyone ever looked at a marathoner and thought, "I want be so healthy that I look like that"?
Yes, it's impressive, just don't try to sell me on the "it's for my health" BS.
Really.
nzric, if there are actually that many people being hospitalized during triathalons, then triathalons are at least as serious a public health problem as heroin addiction, and should probably be stopped. And marathons? Has anyone ever looked at a marathoner and thought, "I want be so healthy that I look like that"?
Yes, it's impressive, just don't try to sell me on the "it's for my health" BS.
arthwollipot
Limerick Purist Pronouns: He/Him
Good grief. I think I'd explode if I tried to drink two liters of water every day!
Gawd autumn1971, if I did multisport for my health I wouldn't be sitting here with a heat pack on my knee and a huge physio bill
Ironman races actually reduced the amount of over-hydration by a huge amount by putting restrictions on the spacing of aid stations.
History of hyponatremia and marathons. 13% hyponatremia rate at Boston marathon 2002!:
http://www.runnersworld.com/article/0,7120,s6-242-302--8785-0,00.html
My suggestion would be to read the American College of Sports Medicine position stand on Exercise and Fluid Replacement.
But then again, I like to read long articles full of technical jargon that include several pages of references.
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Tiktaalik
Half True Scotsperson
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"Myth: Dark Urine Means Dehydration"
from the same source cited above in the 8 X 8 thread (Valtin, Heinz and Sheila A. Gorman; "Drink at least eight glasses of water a day." Really? Is there scientific evidence for 8 X 8? in American Journal of Physiology at http://www.ajpregu.org 2002)
"...the depth of color in urine will vary inversely with the urinary volume."
"...volume varies greatly among individuals,..."
"...at the above-cited normal urinary volume and osmolality, the plasma osmolality will be well within the normal range and nowhere near the values...which are seen in menaingful dehydration..."
"Therefore, the warning that dark urine reflects dehydration is alarmist and false in most instances."
It doesn't say the statement is always incorrect, only usually/normally incorrect.
Also note:
"It is often stated in the lay press...and even in professional journals that by the time a person is thirsty that person is already dehydrated...Osmotic regulation of vasopressin secretion and thirst is so sensitive, qucik, and accurate that it is hard to imagine that evolutionary development left us with a chronic water deficit that has to be compensated by forcing fluid intake."
from the same source cited above in the 8 X 8 thread (Valtin, Heinz and Sheila A. Gorman; "Drink at least eight glasses of water a day." Really? Is there scientific evidence for 8 X 8? in American Journal of Physiology at http://www.ajpregu.org 2002)
"...the depth of color in urine will vary inversely with the urinary volume."
"...volume varies greatly among individuals,..."
"...at the above-cited normal urinary volume and osmolality, the plasma osmolality will be well within the normal range and nowhere near the values...which are seen in menaingful dehydration..."
"Therefore, the warning that dark urine reflects dehydration is alarmist and false in most instances."
It doesn't say the statement is always incorrect, only usually/normally incorrect.
Also note:
"It is often stated in the lay press...and even in professional journals that by the time a person is thirsty that person is already dehydrated...Osmotic regulation of vasopressin secretion and thirst is so sensitive, qucik, and accurate that it is hard to imagine that evolutionary development left us with a chronic water deficit that has to be compensated by forcing fluid intake."