| JREF Homepage | Swift Blog | Events Calendar | $1 Million Paranormal Challenge | The Amaz!ng Meeting | Useful Links | Support Us |
![]() |
|
|
|
|||||||
| Notices |
| Welcome to the JREF Forum, where we discuss skepticism, critical thinking, the paranormal and science in a friendly but lively way. You are currently viewing the forum as a guest, which means you are missing out on discussing matters that are of interest to you. Please consider registering so you can gain full use of the forum features and interact with other Members. Registration is simple, fast and free! Click here to register today. |
|
|
#1 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
Question about speed of Hydration
When we drink a cup of water, how fast does it gets to the different parts of our body?
|
|
|
|
|
#2 |
|
Philosopher
Join Date: Aug 2001
Posts: 9,270
|
Dunno, it probably varies a lot depending on which part of the body and how dehydrated you were to start with. Best estimate is probably something unhelpful like "a few hours".
Is there an underlying question there that you want an answer to, perhaps? |
|
__________________
Rimmer: Look at her! Magnificent woman! Very prim, very proper, almost austere. Some people took her for cold, thought she was aloof. Not a bit of it. She just despised fools. Quite tragic, really, because otherwise I think we'd have got on famously. |
|
|
|
|
|
#3 |
|
Philosopher
Join Date: Sep 2003
Location: St. Louis, Mo.
Posts: 9,519
|
Couldn't give you an exact figure, but endurance athletes like cyclists are told to "drink before you feel thirsty", as there is a significant time-lag between ingestion and getting into your system.
|
|
|
|
|
#4 |
|
Anti-homeopathy illuminati member
Join Date: Sep 2003
Location: NT 150 511
Posts: 34,314
|
It's not as long as "a few hours" though.
However, since gut absorption is the main limiting step, then I don't think it's possible to be very precise, as many factors can influence the speed of that. Rolfe. |
|
__________________
"The way we vote will depend, ultimately, on whether we are persuaded to hope or to fear." - Aonghas MacNeacail, June 2012. |
|
|
|
|
|
#5 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
I attended some courses. They advocate the benefit of drinking water.
Apparently, after drinking water, there are some behavioural or physical changes almost immediately. It might be placebo effect or it might be psychological effect, but that is not the focus of this thread. I noted that I cannot find any research on the rate absorption of water into the body. The lack of research and studies about the rate of absorption of water into body created some gaps. It created opportunity for fertile imaginations about how water gets to the brain and body. Which I think might be quite misleading. I figured that a documented scientific research about rate of absorption of water can provide a realistic and scientific grounding about what happened. I know if someone inject some liquid into the vein of my hand, it'll get into my eyes within around 18 secs. If I am able to find out how fast it gets from the gut to the blood stream, I might be able to deduce the realistic time of water to get from mouth to brain. I understand it might vary depending on condition. But what is the fastest possible time we can expect water to get from the mouth to the brain, in the most optimum situation. That would hopefully, set some emphirical limit, and keep some wild imagination in-check. |
|
|
|
|
#6 |
|
Critical Thinker
Join Date: Jul 2005
Posts: 330
|
I have heard 20 - 30 minutes, but that was just told to me by fellow hikers, etc.
|
|
|
|
|
#7 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
I should think Homeopathic experts should know how fast water gets from the mouth to brain.
|
|
|
|
|
#8 |
|
Humor Impaired
Join Date: Mar 2005
Location: The Cultural Desert
Posts: 4,910
|
Ah, but when the water has the same effect as the homeopathic 'remedy', it makes little difference.
Not to mention, it would vary from person to person, as well, I would think. |
|
__________________
When Religion becomes State, and breaking the Law becomes Sin, then Dissenters will become Heretics. Oh nonsense. Still not hugging you. -KilessForum Tosser and Skirt Chaser |
|
|
|
|
|
#9 |
|
Penultimate Amazing
Join Date: Aug 2002
Location: Whithin earshot of the North Sea
Posts: 16,600
|
Quote:
Hans |
|
__________________
Don't. Just don't. |
|
|
|
|
|
#10 |
|
Tea-Time toad
Join Date: Mar 2005
Posts: 15,068
|
Quote:
|
|
|
|
|
#11 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
Quote:
1. Why should they know? 2. How should they know? 1. Why Should they know? (a) They supported "science" of "memory of water". Their homeopathic solutions relied heavily on water as a delivery vehicle.As such I find it unacceptable that they do not know how fast water gets from the mouth to the brain. They should at least get their facts right (rate of absorption) about the mechanism of how their remedy worked.(if it does) (b) I assume some of their innocent scientists or practitioner do try to find scientific explanation on why homeopathy worked. I hope knowing the fact about rate of absorption of water gives them a good grounding of what is possible and not possible.And hopefully some of them wakeup on any wrong imagination. 2. How should they know? By doing real clinical research on real people. Since Homeopathy has had a long history they should have ready facts. 3. Homeopathy do adopt other people's science to support their product. That is actually okay. But I have impression that they take more than they contribute. So let just presume that modern science failed to provide any emphirical prove of the "rate of absorption of water from mouth to brain", I would think the homeopathic community is obliged to fill the gap. |
|
|
|
|
#12 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
Quote:
It is my observation that scientific studies helps homeopathy. They could argue that a homeopathic solution has memory, by virtue of the ability of the weak hydrogen-bond of water molecules to acquire the characteristic of the active component. Non-homeopathic community seemed rather complacent about the strength of science as an ally. And think that science is always on their side. Not true. Telling half-truth is not only not punishable. It seems fashionable. Scientific field, unexplored, allows for fertile ground for "sci-fiction" "Sci-fiction" in the individual's mind helped Homeopathy to great effect. Internet allowed flow of scientific "half-truth". This is not a thread about Homeopathy. It is a thread about science. I seek facts, I seek documented studies. If there are non after our effort. Then I seek support to call for such a study. Please support me if you think it is worth while. |
|
|
|
|
#13 |
|
Philosopher
Join Date: Jun 2005
Posts: 6,787
|
Re: Question about speed of Hydration
Quote:
Anybody here been dehydrated enough to feel an improvement from a glass of water? Heat prostration to the point of no sweating, how long to sweat again after watering? Or, dry enough to get a cotton mouth, don't you get immediate relieve after taking a drink? I know that I awake with a full bladder everyday. I empty it and have a glass of water. Need to drain it again in 15 minutes, not so if I delay the drink. Sooo, 15 minutes from oriface to oriface ? All anecdotal, just some ideas to look in to. |
|
__________________
Please pardon me for having ideas, not facts. Some have called me cynical, but I don't believe them. It's not how many breaths you take. It's how many times you have been breathless that counts. |
|
|
|
|
|
#14 |
|
Illuminator
Join Date: Aug 2003
Location: Western Wisconsin
Posts: 4,622
|
I think it starts immediately. But I couldn't say when the last of it would be absorbed. If you drank a gallon of water, it be quite a while till all that sloshing disappeared. :cs
|
|
__________________
I lost my mind many years ago and it hasn't affected me a bit...a bit..a bit..a bit. |
|
|
|
|
|
#15 |
|
Philosopher
Join Date: Sep 2003
Location: St. Louis, Mo.
Posts: 9,519
|
Although not directly in answer to the question, I'm familiar with the standards for endurance athletes (I'm a cyclist).
The loss of as little as 5-6% of total body fluid will have an adverse effect on aerobic efficiency of as much as 20%. Thus, road racers and those in training are advised to consume one large (16 oz) water bottle at least every 45 minutes. This applies as well in cooler weather, since a large volume of liquid will be expelled as vapor by heavy breathing. |
|
|
|
|
#16 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
Re: Re: Question about speed of Hydration
Quote:
But think this is a good lead. Anyone more experienced? Presumably there are policeman who walked around with breathe analyser to check if a person took alcohol. Logically they ought to have some info on how fast alcohol gets to the brain. Why would water and alcohol be absorbed in mouth and stomach ? For water, are you suggesting osmosis into the cell in the mouth? |
|
|
|
|
#17 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
Quote:
They touted the benefit of the oxygen content. Since you are a cyclist I thought you might be the target consumer. I understand people disputed the benefit. But I thought for the oxygen to get to the place in the body where it is needed, some research must have been done about how the water gets around. |
|
|
|
|
#18 |
|
Anti-homeopathy illuminati member
Join Date: Sep 2003
Location: NT 150 511
Posts: 34,314
|
Now take this very slowly.
Oxygen gets into the body from the air. Through the lungs. And is transported around the body by complexing with the haemoglobin molecule. This process is all extremely well understood. Water is something you drink. Although there is an oxygen atom in a water molecule, it stays there. Water does not hydrolyse in the body to produce oxygen gas. Fortunately. I think somebody has got a bit mixed up here. Rolfe. |
|
__________________
"The way we vote will depend, ultimately, on whether we are persuaded to hope or to fear." - Aonghas MacNeacail, June 2012. |
|
|
|
|
|
#19 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
Rolfe,
No confusion. I'm refering to doubtful stuff like this. http://www.hiosilver.com/ http://www.hiosilver.com/the_truth_about_hydration.htm No hydrolyse. I think they compressed/dissolved oxygen in water. "Oxygenated water" as in "Carbonated water". And as I mentioned it's benefit has been disputed. http://www.psu.edu/ur/NEWS/news/april98sportsmed2.html But they didn't say anything about how water gets around. ------------ On another note... Can water with dissolved oxygen get into the blood stream after being consumed? If it does, will the oxygen in the fluid in the blood be taken by haemoglobin molecule ? I'm not a fish, but a fish does get it's oxygen from water. So technically there is a scientific possibility for oxygen to get into the blood. |
|
|
|
|
#20 |
|
Anti-homeopathy illuminati member
Join Date: Sep 2003
Location: NT 150 511
Posts: 34,314
|
Quote:
It's complete nonsense being used to sell quackery. Why do you bother about it? Rolfe. |
|
__________________
"The way we vote will depend, ultimately, on whether we are persuaded to hope or to fear." - Aonghas MacNeacail, June 2012. |
|
|
|
|
|
#21 |
|
New Blood
Join Date: Dec 2004
Posts: 4
|
Quote:
http://www.cptips.com/fluids.htm#coldfluids
Quote:
-- Mike |
|
|
|
|
#22 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
Quote:
Fishes ability to get oxygen, from oxygen dissolved in water, through their gills demostrate that oxygen can get into a body system of the fish while it is dissolved in water. This is science, physics. Can water with oxygen dissolved in it get transferred from outside the cell into it? Can the oxygen rich water transfer from one cell to another cell? How slowly? how quickly? I suspect you might be inclined to say it cannot be done. But why? Is there any scientific reason why it cannot be done? Oxygen molecule too large? Holes in cell wall too small? No doubt, Human's primary means to get oxygen into our body system is via the lung from the air around us. But that does not automatically means all other means cannot be possible. I could very well supply a patient oxygen, through the tranfusion of oxygen rich blood.
Quote:
Quote:
|
|
|
|
|
#23 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
Quote:
So it sort of set a limit to "no faster than 10 mins." to get it into muscle. |
|
|
|
|
#24 |
|
Gentleman of leisure
Tagger
Join Date: May 2005
Location: Planet Earth
Posts: 17,171
|
Experiment for you
1. Best to start with an empty stomach. Get dehydrated slightly. Maybe do this first thing in the morning. 2. Drink water until your stomach is full. 3. Wait 10 minutes. 4. See if you drink as much as before. If so, your stomach has emptied between drinks. If you cannot then you did not wait long enough between drinks. I was told it takes 10 minutes for water to be absorbed long time ago. |
|
|
|
|
#25 |
|
Muse
Join Date: Jun 2004
Posts: 736
|
Quote:
How do we know stomach full? Some info I found said that when you are really full, you vomit. If we vomit it will put us back on square one. Any suggestion how to avoid that? |
|
|
|
|
#26 |
|
Gentleman of leisure
Tagger
Join Date: May 2005
Location: Planet Earth
Posts: 17,171
|
Quote:
|
|
|
|
|
#27 |
|
Illuminator
Join Date: Aug 2003
Location: Western Wisconsin
Posts: 4,622
|
Quote:
Are you sure that what "they" mean, instead, is that in 10 minutes, the FIRST of what you drank begins to be absorbed? If you drank till you were full, you would be in misery, with your full sloshing stomach, probably for 2 hours or so. Unless, of course, you did this while single handedly building a pyramid out in the Sahara desert somewhere.
|
|
__________________
I lost my mind many years ago and it hasn't affected me a bit...a bit..a bit..a bit. |
|
|
|
|
|
#28 |
|
Gentleman of leisure
Tagger
Join Date: May 2005
Location: Planet Earth
Posts: 17,171
|
Iamme, this is an experiment you are allowed vary it a little to suit your purposes. As I said in my previous post just drink 2 or 3 glasses of water, first thing in the morning. I know for me at least I can feel this water in my stomach. I assume everyone else can too. Or is that an invalid assumption? Then if you wait 10 minutes or so and drink water again until you have the same feeling as before then you know how much water the body has absorbed, because you have just drank that much water.
If you want to know exactly how quickly the first water reaches the arm then you need radioactive water and a Geiger counter. However, these things are not easy to get. |
|
|
|
|
#29 |
|
Illuminator
Join Date: Aug 2003
Location: Western Wisconsin
Posts: 4,622
|
If I drink liguids in the morning, after I first get up...I have to keep peeing. It's like I can't hold my liquid for the first 2 hours or so, for some reason. After that? I can go for hourssssss without having to go.
|
|
__________________
I lost my mind many years ago and it hasn't affected me a bit...a bit..a bit..a bit. |
|
|
|
|
|
#30 |
|
Gentleman of leisure
Tagger
Join Date: May 2005
Location: Planet Earth
Posts: 17,171
|
Quote:
Wait until you get in your 40s and older. You will start to get up in the night to have a pee. Safety note. Pee during the day should be clear. Otherwise it is a sign you are not drinking enough (or maybe consuming dye or something). |
|
|
|
|
#31 |
|
Philosopher
Join Date: Jun 2005
Posts: 6,787
|
Quote:
|
|
__________________
Please pardon me for having ideas, not facts. Some have called me cynical, but I don't believe them. It's not how many breaths you take. It's how many times you have been breathless that counts. |
|
|
|
|
|
#32 |
|
Muse
Join Date: Sep 2001
Location: Hudson Valley NY
Posts: 767
|
...and that non-conscious old guy shuffling toward the loo at 3:45
AM is the dreaded pee-zombie..... sorry.carry on |
|
|
![]() |
| Bookmarks |
| Thread Tools | |
|
|