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How much water?

I seem to always be dehydrated.... how much water should someone drink in a day?
Enough to not be dehydrated...

The official recommendation is 8-10 8 ounce glasses a day. (One ounce = 30 milliliters.) Generally if you eat a healthy diet with fruits and vegetables you will get a lot of water from those. If you are out sweating a lot you should drink a little more water.

Easiest thing to do is to have a full glass of water with each meal and try to have something to drink accessible between meals if you feel thirsty.
I don't really drink a lot of water, but I'm no dehydratet. I drink 3-5 medium glases each day.
Better drink more than you are thirsty fr, as it si proven to be healthy
Amen to what the previous posters said. Be sure to keep drinking a lot in the hotter summer months, too...with this heat wave you can easily get dehydrated and get delirious and all the joys that come with heat exhaustion. Don't force down water fast, just drink it slowly so your stomach agrees with you.
wait, so what about those bottles of water you can buy in stores? is that a glass? or a cup? lol. how many of those would you have to drink in a day to equal 8 glasses of water? o_o but yeah, i heard as long as (forgive me) your pee is clear, you're pretty much okay on the water situation.
hmm, i'd say u were either drinking too much or not eating enough if your pee was clear lol. Your body is just getting rid of it again.

If you divide your weight in KG's by 30, thats much much litres of water per day u should be drinking Smile

Drinking a full glass of water first thing in the morning helps wake the body up. So kick-start your day with water!

Water helps you look good. By flushing out toxins and impurities, water can make your skin clearer, smoother and younger looking.

Drinking excessive amounts of water can cause serious health problems for some people.
Somebody posted a similar topic, albeit on the Science and Nature forum. Razz It's become a very interesting thread. Cool
i said when you are thirsty drink water just plain water..never wait to quench your thirst cause from what i read the level of dehydration increased and you may not met your water daily intake.
8 t0 10 glasses in day and 3 to 4 glasses in night
Water is extreamly good to your skin. It makes it look much more healthy, and you feel better. (Even though water does not really taste any good)
It seems everybody is an expert when it comes to how much water you need. Just for kicks read the following article by a kidney specialist. I'll bold some of his key points. You may disagree with him, but if you are going to insist that drinking all that water is necessary, maybe you could find a good reference to back it up?

12 August 2002
Recommended Water Intake A Myth
It has become accepted wisdom: "Drink at least eight glasses of water a day!" Not necessarily, says a DMS physician Heinz Valtin, MD. The universal advice that has made guzzling water a national pastime is more urban myth than medical dogma and appears to lack scientific proof, he found. In an invited review published online by the American Journal of Physiology August 8, Valtin, professor emeritus of physiology at Dartmouth Medical School, reports no supporting evidence to back this popular counsel, commonly known as "8 x 8" (for eight, eight-ounce glasses). The review will also appear in a later issue of the journal.

Valtin, a kidney specialist and author of two widely used textbooks on the kidney and water balance, sought to find the origin of this dictum and to examine the scientific evidence, if any, that might support it. He observes that we see the exhortation everywhere: from health writers, nutritionists, even physicians. Valtin doubts its validity. Indeed, he finds it, "difficult to believe that evolution left us with a chronic water deficit that needs to be compensated by forcing a high fluid intake."

The 8 x 8 rule is slavishly followed. Everywhere, people carry bottles of water, constantly sipping from them; it is acceptable to drink water anywhere, anytime. A pamphlet distributed at one southern California university even counsels its students to "carry a water bottle with you. Drink often while sitting in class..."

How did the obsession start? Is there any scientific evidence that supports the recommendation? Does the habit promote good health? Might it be harmful?

Valtin thinks the notion may have started when the Food and Nutrition Board of the National Research Council recommended approximately "1 milliliter of water for each calorie of food," which would amount to roughly two to two-and-a-half quarts per day (64 to 80 ounces). Although in its next sentence, the Board stated "most of this quantity is contained in prepared foods," that last sentence may have been missed, so that the recommendation was erroneously interpreted as how much water one should drink each day.

He found no scientific studies in support of 8 x 8. Rather, surveys of fluid intake on healthy adults of both genders, published as peer-reviewed documents, strongly suggest that such large amounts are not needed. His conclusion is supported by published studies showing that caffeinated drinks, such as most coffee, tea and soft drinks, may indeed be counted toward the daily total. He also points to the quantity of published experiments that attest to the capability of the human body for maintaining proper water balance.

Valtin emphasizes that his conclusion is limited to healthy adults in a temperate climate leading a largely sedentary existence -- precisely, he points out, the population and conditions that the "at least" in 8 x 8 refers to. At the same time, he stresses that large intakes of fluid, equal to and greater than 8 x 8, are advisable for the treatment or prevention of some diseases, such as kidney stones, as well as under special circumstances, such as strenuous physical activity, long airplane flights or hot weather. But barring those exceptions, he concludes that we are currently drinking enough and possibly even more than enough.

Despite the dearth of compelling evidence, then, What's the harm? "The fact is that, potentially, there is harm even in water," explains Valtin. Even modest increases in fluid intake can result in "water intoxication" if one's kidneys are unable to excrete enough water (urine). Such instances are not unheard of, and they have led to mental confusion and even death in athletes, in teenagers after ingesting the recreational drug Ecstasy, and in ordinary patients.

And he lists other disadvantages of a high water intake: (a) possible exposure to pollutants, especially if sustained over many years; (b) frequent urination, which can be both inconvenient and embarrassing; (c) expense, for those who satisfy the 8 x 8 requirements with bottled water; and (d) feelings of guilt for not achieving 8 x 8.

Other claims discredited by scientific evidence that Valtin discusses include:

* Thirst Is Too Late. It is often stated that by the time people are thirsty, they are already dehydrated. On the contrary, thirst begins when the concentration of blood (an accurate indicator of our state of hydration) has risen by less than two percent, whereas most experts would define dehydration as beginning when that concentration has risen by at least five percent.

* Dark Urine Means Dehydration. At normal urinary volume and color, the concentration of the blood is within the normal range and nowhere near the values that are seen in meaningful dehydration. Therefore, the warning that dark urine reflects dehydration is alarmist and false in most instances.

Is there scientific documentation that we do not need to drink "8 x 8"? There is highly suggestive evidence, says Valtin. First is the voluminous scientific literature on the efficacy of the osmoregulatory system that maintains water balance through the antidiuretic hormone and thirst. Second, published surveys document that the mean daily fluid intake of thousands of presumably healthy humans is less than the roughly two quarts prescribed by 8 x 8. Valtin argues that, in view of this evidence, the burden of proof that everyone needs 8 x 8 should fall on those who persist in advocating the high fluid intake without, apparently, citing any scientific support.

Finally, strong evidence now indicates that not all of the prescribed fluid need be in the form of water. Careful peer-reviewed experiments have shown that caffeinated drinks should indeed count toward the daily fluid intake in the vast majority of persons. To a lesser extent, the same probably can be said for dilute alcoholic beverages, such as beer, if taken in moderation.

"Thus, I have found no scientific proof that absolutely every person must 'drink at least eight glasses of water a day'," says Valtin. While there is some evidence that the risk of certain diseases can be lowered by high water intake, the quantities needed for this beneficial effect may be less than 8 x 8, and the recommendation can be limited to those particularly susceptible to the diseases in question.
That's brilliant! People have been telling me a lot that I should always have water and that when you're thirsty it's already too late. (I'm sure because they cared.) But I don't like that at all because it's just a pain to drink that much, it makes me feel like a big fat waterballoon. And never mind that you have to go to the bathroom 56342636352 times a day at the most inconvenient times.

So now I feel justified for drinking less (and I never experienced it harming me anyway).
Well I drink a lot more than what you guys said is necessary, but that is only because I am active. On days where I'm not feeling well or am just lazy for the day, I drink very little water. But on most days, I am active so I drink several liters (up to 4 liters/about 1 gallon).
I generally only drink water while I am working out (about 3-5 20 oz bottles). And maybe i'll drink on bottle during the rest of the day. I only eat about two meals a day, and it seems to work out fine for me.
I think I probably should drink alot more water than I tend to do at the moment. Aparently it's something around 8 pints (of water that is) a day.
If you're not drinking as much as you should be then one of the easiest ways I've found is to fill a big bottle of water and keep it beside you so it's right beside you when you need it, especially useful when you're at your PC for a long time :p
Drinking 10-12 glasses each day will do wonders to your health.
tijn01 wrote:
how much water should someone drink in a day?

Not more than he can pass out
ill drink water many times..... but im not dehydrates Embarassed
I found an easy equation for how much water to drink daily. Take your body weight in pounds and halve it. This is how many ounces of water you should drink in a day. This equation comes from one of Fereydoon Batmanghelidj, MD's books. You should consider looking into his books as he has studied water and dehydration for the past 20 years. His website is To me, it makes sense that drinking lots of water is helpful to our bodies. It may not be necessary to survive, but it certainly seems to make it easier for our bodies to function at their highest potential. Seeing as how we are more than 70% water, keeping a constant intake of water seems like common sense since we already have a constant output of water. If we're constantly using up the water in our bodies, why not constantly replenish it? Doing so can only help with elimination of toxins. Seems to me that those who say otherwise are ignoring some very simple logic.
tijn01 wrote:
I seem to always be dehydrated.... how much water should someone drink in a day?

Just drink some water when you're thirsty. Your body knows what it needs, listen to it.
About 10-12 glasses a day should do.
You should drink 7-10 glass of water every day! Cool
First thing in the morning dringkhalf a litre of water.

It's pretty difficult initially - and you may even feel like throwing up - but within a few days your body will thirst for it...

After that every hour, make sure you dring one glass of water.

Eat lots of watery veggies like cucumber...

And yes drink plenty of juices - preferbly something like melon juices, rather than citrics (orange, lemon, pineapple).

That should do the trick I think!
It dependes on ones general health and ability of kidneys to flush out excess water. generally 2 litres of water per day is enough or a healthy person... But there is nothing wrong, if you feels thirsty and drinks more water...

You might have to take excess amounts in following conditions
- Hot climate
- Physical strain
- High altitude
- Protein rich diet
- Alcohol intake (incl. Beer, wine etc)
- Coffee
They say on average, 8 to 10 glasses a day, but I think it's too much. If you ask me, I'd say 6 glasses a day, about.
vineeth wrote:
It dependes on ones general health and ability of kidneys to flush out excess water. generally 2 litres of water per day is enough or a healthy person... But there is nothing wrong, if you feels thirsty and drinks more water...

You might have to take excess amounts in following conditions
- Hot climate
- Physical strain
- High altitude
- Protein rich diet
- Alcohol intake (incl. Beer, wine etc)
- Coffee

I agree. It is important for energy to get enough water. I'd say 8-10 glass minimum. The thing about not drinking water is that it shuts off your thirst sensors. So you don't actually get thirsty. Once you start drinking 8-10 glasses a day, the thirst sensor gets reactivated and you feel thirst sensations again.
applejunk wrote:
wait, so what about those bottles of water you can buy in stores? is that a glass? or a cup? lol. how many of those would you have to drink in a day to equal 8 glasses of water? o_o but yeah, i heard as long as (forgive me) your pee is clear, you're pretty much okay on the water situation.

all depends on what size bottle you buy. as a general rule 3 liters - about 80 ounces or 4 pints of water a day is right. lots of variations depending on body wheight, climate, your life style, your working environment.....
the pee check is the easiest - except your first one in the morning when your body had all night to clean itself - don't panic.

I think its true like the previous person said 'listen to you body'. Yes we are mostly water anyway and adding to it just means it will go out and take the toxins with it. Water is never just water though and whatever else is in there will affect us as well. Sure there are side effects like more trips to the bathroom and feeling like Miss Bloooooooooot, but I think the benifits are greater. It does change though as to how much you need so to put a figure on it is not realistic but how do you communicate to people they do need water to live and should not ignore it, "oh, go suck on a lemon"?
It all depends upon Your age,Your work style,Work type,Region where you are staying.But normally you should drink 3-4 liters of water everyday if you are adult.I am of 22.I stay in moderate climate.Working in software company.I drink the same amount of water.
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