You're Probably not Dehydrated: The Eight Glasses of Water a Day Myth
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- Опубликовано: 11 окт 2015
- How much water should you drink every day? Not as much as you've been told. This summer, like many summers before it, has seen a rash of articles warning us not only that is dehydration is dangerous, but that it is also ubiquitous. Real dehydration, when your body has lost a significant amount of water because of illness, excessive exercise or sweating, or an inability to drink, is a serious issue. But people with clinical dehydration almost always have symptoms of some sort.
These reports are worried about something completely different. They fear that otherwise healthy adults and children are walking around dehydrated, so many that dehydration has reached epidemic proportions. Under scrutiny, however, this assertion fails to hold water. That's the topic of this week's Healthcare Triage.
This was based on a piece Aaron wrote for the Upshot a while ago. If you want to read more, links can be found there: www.nytimes.com/2015/08/25/ups...
John Green -- Executive Producer
Stan Muller -- Director, Producer
Aaron Carroll -- Writer
Mark Olsen -- Graphics
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"this assumption Failed to hold water" lol
+Tarek Midani Huh!? Nice, right?
Haha good pun :)
+Tarek Midani The kind of pun that pleases you with how disgustingly appropriate it was :P
+Healthcare Triage I could probably skip to the end where you say, "if you are thirsty, drink if you are not, don't. It's that simple. "
+Healthcare Triage Yet I will say this to somebody and they will not believe me
Also, drinking too much water can cause low levels of sodium; my mother was hospitalized for that when she decided she needed more and more water.
+Acquavallo Yup, water intoxication is serious business. I came pretty close once. It's a strange and scary experience.
my uncle awell he had water in he's knees because of overhydration
+Tamiloveschocolate Doesn't drinking more water help your body get rid of excess fluid?
To a certain extent I guess, but I think my mother's hospitalization for water intoxication proves there's always too much of a good thing
+Acquavallo almost every substance can be poison or healthy :-) it just depends on the amount :-). crazy stuff like eating 2kg of potato peel can be a dangerous poisoning. Salt or other nutrition like tiny bits of iron are good but swallow a iron nugget not so much :-)
Umm, drink when your thirsty...problem solved.
It doesn't surprise me that a company that sells (and steals) water would tell you to drink more.
Thanks, Nestle.
Before you even look at the studies, the prior plausibility that such a high percentage of the population is walking around dehydrated seems very low. Why? Because humans have been around for quite a long time and have finely tuned mechanisms for homeostasis through evolution. Water is essential to human life and to think that nature would allow human animals to survive and multiply as much as we have with such chronic epidemic levels of dehydration is absurd on its face. Let's use some Bayesian thinking here.
This is like the "we use 10% of our brain" myth. To have an organ that takes so much energy and oxygen and then only use 10% of it is absurd. It shows a complete lack of understanding about evolution and natural selection.
Or we are designed that way. What mechanism of evolution would " fine tune" homeostasis? our body functions in a way to adapt constantly to a changing environment, but that is not "evolution"
I think the brain myth came from ~10% of your brain is being used at any one time. Like in a mri machine you see 10% light up at a time. On psychedelics it’s 30%+ at a time, which leads to synesthesia effects. “Taste the rainbow”
JustJake Being inefficient would generally lead to “less fit” for the environment in a pretty global sense. An organism requiring substantially less water would be much more able to exploit its surrounding than one that required substantially more.
It’s “good enough,” sure, but for long term viability with a limited resource like water, “good enough” is still pretty darn good
@@WMDistraction okay? That doesn't really explain much. Like i said, we do have mechanisms that regulate this to fight dehydration. Your explanation may have made sense but natural selection ( i assume you are alluding to) can only select fit organisms from an existing gene pool, thus the ability to regulate water and hydration must be present in a reproducing organism within that gene pool already.
It's not absurd, because no one's arguing chronically dehydrated people are dying of it. Evolution does not finely tune us; it just prioritizes anything that makes us reproduce and not die.
Seriously, this is my favourite channel on youtube. Full of interesting health info, often cutting through a lot of marketing bullshit, and nice tidy graphics to make everything understandable. Bravo!
"Say urine osmolality again..."
HAHAHA!!!
Osmo osmo osmo lalllllllitttyyyy
“i double dog dare you!”
Trust me, there is no way you'll miss the signs if you're actually dehydrated. Beyond a headache and thirst, the dizziness, arrhythmia, rapid heart rate, and downright loopy disposition (among other symptoms) are not easy to dismiss.
I've had an eating disorder for nearly a decade and have had my fair share of ER visits for dehydration. If you're dehydrated, you will definitely know.
I can also tell you that post saline drips and rehydration, thirst was still there. Thirst has little to do with hydration levels.
I grew up hearing the 8 glasses thing which always annoyed me, so I'm glad that he talked about it, especially of how you can still get water intake from other foods and drinks.
Heatstroke is a serious thing in my desert state, so we often try to push the whole "drink a lot of water" thing, especially in summer for obvious reasons, if only because of how much you'll honestly sweat it out. 8 glasses is still too much, but having a water bottle on hand around here is honestly just a good idea. Better to have something on hand you can sip from throughout the day in an outdoorsy state than not, if only to make yourself feel better.
Way to make it a downer. Jesus. Smoke a little bit of ganja, and eat eat eat
@@fshoaps Wow, 'just eat,' why didn't I think of that? My god, let me call the press, we've solved eating disorders everywhere.
Maybe don't respond to comments over half a decade old to get the thrill of feeling holier than thou. Especially not to someone you can't possibly know the current status of. For all you know, I'm well into recovery and doing fine. Or, I'm in the throes of an ED still and this blasé invalidation could be triggering. Either way, kindly sod off.
@@Prizzlesticks Marijuana is prescribed to folks with ED. How dare I treat any situation with a bit of levity.
Kindly sodd off, you Brit
I just pull a Nestle brand water cart behind me all day with the Nestle hose constantly spraying Nestle water directly into my mouth. You can never be too Nestle safe.
Lol!!
I love this dude. He breaks it down so intricate, yet so simplistic!!
Loved this episode, thank you!
You're doing a bang up job, Cameron and Sam!
I love this channel because it keeps opening my eyes to where I'm succumbing to the "popular culture placebo." With that said, what is a good way for an individual to determine how much water they should be drinking? Is the "drink when you are thirsty" rule good enough?
Yes! Drinking when you are thirsty is great. Thirst is the first sign of your body telling you it needs water or else it will start conserving water (which is not harmful btw)
"Osmolality" is my new favorite word.
I drink water all the time, and it just makes me go to the bathroom more frequently. :B
actually most of the (salts) in urine is urea, which is produced from eating to much meat
Dont Forget To Be Osm!
I say I'm dehydrated when I forget to eat or drink water for at least 12hr and have s splitting headache. Basically when I get a hangover without drinking alcohol.
We don't need more water because our body recognizes our lack of water and uses our high salt to water ratio to bloat us up and retain water.
So, you're right, we don't need 64 oz a day. But if you don't want to be bloated and retaining water in unsightly areas, you might want to bump it up.
Thanks, doc.
I LOVE THIS CHANNEL!
Can you do a video on meats? I'm curious what the science says on eating meats with hormones, or fed with different diets.
I'm buying your myth book lol. You are the man. LOVE IT!
Even if dehydration is not an issue, over eating is. Drinking plenty of water, along with adding more veggies and fruits, is a good tool to feel satiated. It's cheap and easy to implement.
And by having some sort of water intake goal, even if it is a bit arbitrary, you're encouraging them to drink water instead of sports drinks, sodas, etc.
And this video focused on the average person, but what about athletes or people with serious physical endeavors? Surely, the water they get from just food alone is not enough.
So even if there are no direct benefits to drinking more water, I think there are some indirect benefits to having an intake goal. There's no real drawbacks as it's cheap, easy to do, and there's no healthy limit under normal conditions.
As an athlete you drink when you're thirsty and that's it there's no point in over drinking just to pee yourself in the middle of a game
Training is often times more stressful than game day. For athletes in the gym, they have the luxury of going to the bathroom whenever they need to.
I think it's far better to get athletes to keep hydration as a priority rather than say, "Oh, don't worry about it. Just drink whenever you feel thirsty." It's easy to get lost in the heat of practice and completely ignore signals from your body. Again, under normal circumstances, there's no drawbacks from drinking plenty of water. The only drawback may be from having to take a couple bathroom breaks during training.
It's better to drink tap water than bottled water though. Not only is it cheaper, but also cleaner, because testing standards for tap water are higher.
BuzzFeed literally JUST posted a video saying we're supposed to drink 2.5 quarts of water. Which, if 8 glasses is roughly 8 ounces, is even MORE than 8 glasses a day. People just won't accept this myth. I remember John Green debunking this myth way back in Abundance of Katherines. Lol
When I qualified as MD in 1980, this myth really hadn't taken hold and, as you say, I've failed to find anything to change my mind
It would be really great if you did a video on how much pure water is actually necessary if at all, and the pros and cons of drinking certain amounts of water each day
Thank you! I always thought this was ridiculous...
Well, I do certainly understand where Dr. Carroll is coming from. Let me explain my experience and why I prefer to drink more water than less. No, I haven't been influenced by advertising and I don't work for Nestle or Poland Spring.
My body does not do a great job of telling me that I'm dehydrated or need additional water; basically, I don't often get thirsty during the day when I should. If I am not careful, I can very easily go 3+ hours without water. By the time I realize I haven't been drinking water, it may already be too late. When dehydrated, I run into problems with constipation and severe headaches. I would MUCH rather be on the safe side and drink a bit more water than to run the risk of becoming dehydrated and having constipation & headaches. It's a very, very unpleasant experience when I get dehydrated -- so unpleasant that one time after a severe headache that lasted more than a day, I went over to the nearby hospital. They diagnosed me with dehydration and pumped >2 liters of fluid into me.
I make sure to have water with every meal (even if I have another beverage such as milk or orange juice), and I also make sure to not go 2-3+ hours without water unless it is before bed. Additionally, I make sure to have fruit, vegetables and yogurt every day to help with my digestion. My grandmother is actually very similar to me in that she has plenty of water, fiber, and yogurt in her diet. Perhaps my situation is somewhat genetic in nature. In any event, I've never been over-hydrated, and I know from experience that it's an absolute NIGHTMARE when I get dehydrated; I'd much rather stay on the safe side and drink plenty of water throughout the day.
Just rewatched this. The ad served up was for a canned vodka soda, with the tag line "Drink up"
lol!
I am probably one of the few in the group that gets clinically dehydrated. I have an inability to be able to get myself to drink lots of water but I am plantbased so my foods are fruits/veggies so I get some there. On my bad days it will cause headaches and I will even wake up from sleeping needing to drink, it is semi painful at that point but a bottle of water usually fixes in an hour or so. Our bodies are great at keeping things under control when we mess up.
Are you drinking filtered water?
I strongly agree with this video and the points that have been made throughout it. Water is in most foods and it makes up all types of drinks, so you are getting hydrated through different means other than just drinking water. Not to mention that everyone is different and their bodies use and store the water that they take in, in very different ways. Some people drink a lot of water every day, whereas others barely drink any water daily and they are both still alive and not dehydrated. Also, the human body is equipped to signal when water is needed and this causes you to become thirsty and want to drink water. The human body signals thirst long before it becomes dehydrated and before the person would start to feel the symptoms of dehydration. There can't be a recommended daily amount of water that people should be drinking because we get water from different places and we all need a different amount of water to hydrate our own bodies. The body itself will let you know how much water you specifically need.
I know idiots who will see this and say you are anti-water. Thanks for bringing science to the table, as always, Aaron!
All I care is that I get enough water and avoid drinking dihydrogen monoxide.
*mind blown*
It's LOWER in countried like Kenya, but HIGHER in a developed nation? o.O
I'd love to hear an expenation for that one!
They have less sugar in Kenya I would assume and more whole foods. The Western diet isn’t always healthier.
Am I having a deja-vu or has this episode already been uploaded before?
Guess I can go back to drinking only sodas now! Thanks!
I always try to drink a lot of water as I never want to be dehydrated because dehydration causes multiple problems and just isn’t healthy. I never thought of other sources that give your body water, such as vegetables or even juices. I am one of those guilty people that carries around a water bottle almost everywhere that I go so I can sip from it all day whenever I feel thirsty and hopefully come close to the "goal" of how much water I should be consuming. I also find it quite interesting that after studies were conducted there were no findings of any real benefits water has to offer. Water is one of the few things I do drink so I am not going to drink less because there is no added benefit to it, I just find it interesting that what some consider to be one of the healthiest drinks (because it has no calories or other additives) has no other benefits to it. Logically it does make sense that there are no benefits to water because there really isn’t anything in water. What really shocked me about this video was the portion on the urine osmolality. 800 mOsm/kg would consider the child to be dehydrated. Even though half of the children in this student had a urine osmolality of 800 mOsm/kg. The fact that he went on to say that this was not alarming (the number of children in this range of urine osmolality) and his colleagues agreed that a child being in that range should not be alarming, was odd to me. You would think these standards would be put in place for people to have a comparative measure on what is actually ok and what needs attention. Not only is this standard basically ignored but it apparently is also considered normal to be significantly over the 800 mOsm/kg. The variation is so large it seems as though it is actually difficult to decide was is normal when testing urine osmolality. I agree with him and that the health cannot be off for so many children and that the standard needs to be changed, not the amount of water that they intake.
For the past few months, I have been making sure to drink plenty of water everyday and to stay hydrated. Never did I think of the water that was in my food counted towards that. I also thought that coffee dehydrated your body...turns out that is not true! Good to know because I drink lots of coffee. Many of my friends do not drink water or don't like the "taste" of water so they never drink water...which is truly concerning knowing that they are setting themselves up for health issues.
He makes some very good points. I think every person is different in how much water their body needs, so saying an 800 msOm/kg or higher is not correct. Being in the medical field, I very rarely see anyone being tested for Urine Osmolality and if they are being tested, none are children. It is not a good way to check for dehydration. If your child has a decreased urine output, dizziness, or confusion are good ways to notice if they are dehydrated. You need to up their water intake of fluids. Popsicle's, ice chips, and gatorade are good choices if you think your child may be dehydrated. You should be sure to see a physician if you think your child may be dehydrated.
I, like many other individuals, do not get nearly enough water a day. I am not saying that everyone needs eight glasses of water a day, but I know I do not get nearly enough. One of the main things that drew my attention to this video was how I can relate this video back to my life. My fiancé suffered from severe dehydration a few years back when he was in the police academy. They worked them day and night and his body just did not receive the proper amount t of water to continue functioning. His whole system started to shut down. This was a scary point in his life, but thankfully he made a full recovery. Ever since I found out about this incident, I have been interested in learning more about hydration and how much water individuals need every day. I knew there was water in most foods and drinks, but I never really knew how much.
I was surprised at the fact that drinking more water has minimal health benefits. I see student athletes walking around campus with this huge water jugs and I always wondered if that was actually necessary. I knew that the amount of water needed a day depended on the individual, but I did not know that so many factors were taken into account.
Me in Minecraft-
Drinks 1 bottle of water per game
Just got an ad before this for a hydration drink to prevent dehydration haha.
Hi Aaron. Episode on circumcision?
Can someone point me to the episode he mentioned on calling an ordinary health state a disease?
I always thought that drinking eight glasses of water a day was a lot knowing that maybe If a person isn't as dehydrated as others can be what if I don't need to drink as much but watching this video breaks down on why we don't need to drink as much water a day. I believe that water is consumed other ways then just a glass a day and that water is good for you but you don't have to drink as much. water is something that some people don't like because it doesn't have a taste and I am one of those people but if you exit water out of your life it can cause many problems like a common one known as Urinary tract infections. they're other causes but one main thing is not drinking enough water and then you also have being dehydrated because you don't have enough water that helps back you up. the best thing to do is to make sure you do have enough water in your system so you body can help you stay hydrated in times when you can get to any beverages and you become thirsty .I just felt that I always knew you didn't have to drink 8 glasses a day because for one I really hate the idea and for two you have other things that can help you consume that.
I'm sorta curious if drinking more water is a good recommendation for people who are overweight (such as myself). My thinking is this, if I drink more water (especially while I eat), my stomach feels more full, and it may help with reducing food intake. Thoughts?
With being a sports guy, all growing up we were told drink water drink water drink water or you will cramp up or faint. after watching this video I can see its not that big of a deal as everyone makes it. I agree water is very important but carrying a water jug around is not needed you can get a lot of your water through foods as well and saying that we are in danger of dehydrated is definitely an overstatement. I am glad I know now so I don't have to feel in trouble when getting ready for activities throughout the warm day to consume a bunch of water.
Thank you! is there an episode on Drinking too much water yet?
Hey stan,
I reacently did an endocrinology course, and it was said that Vasopressin secretion started before thirst kicked in. I don't know how broad that gap is, but what do you think?
I found two benefits to drinking lots of water:
1. Water is colder than core temperature => Helps cool down somewhat. Especially useful in summer! Even if heated by ambient temperature, it's still going to somewhat cool you down.
2. The stomach doesn't differentiate between food and water when feeling "full" as far as I experienced. Drinking "lots" of water alongside a meal makes me feel full with much less calorie intake and thus satisfied => weight loss help (helps with discipline of maintaining net kcal intake to be favourable)
I find it rather interesting that there is a push for the "recommended intake for water", yet there is really not a recommended amount of water you should intake in a day. I think that a lot of people don't take into consideration the amount of water that is already in the food that we eat. I am an asthmatic and I am always extremely thirsty. I have always chalked it up to dehydration. I think there is a certain amount of water that a person needs daily. However, I think that the amount of water a person needs cannot be standardized. I believe that the amount of water varies, depending on the person, their physical activity, and many other factors.
Before I started drinking about 4 glasses of water a day, my face was just dry, red, and flaky. Once I stArted drinking water everything started to change. My skin tone instantly started changing. I have some type of red rash on my cheeks and water seems to make it fade. So stay hydrated
Have you ever had the rash diagnosed?
Just finished watching this video. The ad that followed is about being dehydrated and buying a product with magical hydration properties. Slick.
This is the kind of lie that encourages people to go for some water instead of a sugary drink, so I am not too upset that this particular piece of misinformation keeps being spread. While I agree that doing things for the right reason is better, I don't think that is how most people work and I don't know what's worse...
+Vendavalez main problem is that people do not replace soda with water but simply add water.
I should know, I do that.
+Vendavalez It can also lead to overhydration, especially with athletes. This is also a great concern in many militaries that force their troops to drink water during training even if they don't feel remotely thirsty.
Basically, don't drink so much of your calories in a day, but don't be overly scared you're not drinking enough water either.
I would agree with you on athletes. I am not too sure about militaries. I know when I was in we were forced to drink water some times, but that was only when we had a bunch of people passing out because of where we were and what we were doing and some of them were just not drinking enough water. I don't know of people dying in any branch of the military in America (which I would imagine it would be the main country taking that "recommendation" into consideration) dying because of over-hydration. Puking? Sure. But that is long before getting to the point of actual damage. I know it's not exactly cool, but not a lot of things about being in the military are.
+Vendavalez What Joseph Fox said. In fact, my best friend in highschool got a nalgene bottle one day and said, "I'm going to drink 2 litres of water every day!" and just ADDED water. Then she promptly got a bladder infection.
I would be interested to see if this water push came in when selling bottled water was found to be really profitable.
The water industrial complex?
There is also a concerning amount of people trying to defend their intake of soda. It's okay to drink soda , but don't act like it is healthy. Soda is probably one of the worst drink choices most people have to choose from on a daily basis. It may "hydrate" you. But you won't reap the benefits as much as with plain water. This is due to the sugar intake along with the other chemicals in the drinks. They basically strip the benefits of the water away. Bc your body uses all of the water in the soda at once to digest and break down the chemicals and sugar in the drinks, your not actually being hydrated. But your not dehydrated either. Water is your best choice no matter what, it's pure and won't to any harm (depending on your location and your source) You also don't need a whole lot of water if you live a sedentary lifestyle. If you do nothing all you need is around 3 glasses a day. If you do sports just drink as much as you think fit. But try not to drink under 5ish.
gatoraid, and other sport drinks contain electrolytes (specifically sodium and potassium) that enable your body to hold onto water rather than just pissing it all out.
This episode appears to be over 800 milli-awesomes.
Why wasn't there any coverage on the difference between how much you need with high activity levels verses a sedentary life? I personally get dehydrated quite easily. I feel it - headaches, dizziness, racing heart.. and I usually drink 8 glasses a day or more. I'm rarely thirsty but I don't have those symptoms if I'm drinking more water. I am very active, 10,000+ steps per day, weight lifting, hiking, 12 hour shifts lifting people, turning people, and running around stressed out. I would love to see a recommendation that is science based on how much someone should drink based on their lifestyle. Also I'd just like to point out that the amount of water a child needs would be less than an adult because of their size, so 8 glasses a day is rather arbitrary and people don't seem to grasp that its probably an average. One last thing, I believe there is a difference between what is necessary to sustain life and what is optimal for the best overall health. Have there been studies on that?
It is parents who are responsible every day for making sure children are well nourished in every facet of their life.yes they worry.A study on the aged who maybe do not recieve the monitoring that children do every day may show different results.Many aging issues especially confusion have direct correlation with clinical dehydration.
I can only speak from personal experience, but back when I was in high school I used to only drink soda and juices. I had terrible acne and always felt tired and lethargic. My acne was breaking out once every three to four days. After hearing about the 8 glasses of water myth, I spent a week drinking as much water as possible. I'm talking at least a gallon a day. My acne literally disappeared the next week and I never had it again.
Haha, so glad this episode was made. I got a little confused when I was in secondary school because I realized that all I really drank was tea, when I was at home, which seemed to suggest I ought to be dead. I mean, I'm sure it wasn't the healthiest thing to be doing, but I somehow made it through :P
I think the only thing that would make the video better would be touching on some of the risks of drinking too *much* water. It's not good for your kidneys to have to process too much water (why do we always go to extremes?! 'not too much, not too little' - applicable to so many things!) and it can reduce your salt levels dangerously (because your kidneys can only save so many salts if they're having to pass litres of water).
+Radish Raccoon Tea is literally just flavored water.
Jaclyn Lizzi Well, not quite. It has lots of chemicals in it too, such as tannins and caffeine. There's a common misconception that because caffeine is a diuretic, you actually lose more water than you gain with tea and coffee. This is not true, but it is such a pervasive myth that it completely confused me when I was younger. That's why I said I'm glad the video exists now.
Radish Raccoon I was using literally in the modern semantic meaning of 'basically.'
And it's a dumb myth XD
if you piss clear your properly hydrated. if not drink more water
Is there a study that shows if there is a difference between plain water and water in other beverages and foods? Like does plain water help with kidney stones over say flavored, carbonated water? Allergies? Want to follow up on this.
I think that the risk of dehydration is far greater in places like Northern and Western Africa where water is scarce or very dangerous to drink. Most people are not dehydrated if they are healthy. Dehydration comes from the loss of body fluids like vomiting, diarrhea and mucus secretions. Most people that go into the hospital are dehydrated because they are ill. There is a way to make sure you're hydrated and that's called skin turgor. If you pull the skin up on your hand and it "tents," meaning it stays pinched up, it is a sign of dehydration. Most people get enough water through the food that they eat so excessive drinking is unnecessary. Although rare you can actually get intoxicated by consuming too much water. I think that we drink so much because bottled water companies tell us too. There has been a huge increase in the amount a bottled water used and this has caused a strain on landfills. Bottled water companies won't tell you to drink less water or use water bottles either; they have to make their money somehow. I think that as long as you follow a good diet then you will be fine when it comes to keeping hydrated.
I was dehydrated once and it was one of the worst physical experiences of my life. I was horribly dizzy for hours on end and my stomach Did Not Like It. After that I learned not to ignore the much earlier physical symptom of feeling inexplicably and overwhelmingly sleepy despite getting enough rest the night before.
Good to know
but these anecdotes are powerful, mine included
I have CVID and get IVIG every three weeks. Extra water consumption helps to keep my meninges from going extra stupid (swollen and painful). Right before, during, and after infusions is the only time I up my water consumption.
is it a bad thing to drink to much water?
I remain thankful you put these out for us. I consider these are as valuable as some journals I read :-)
I have just gotten one step closer to being the smartest man on Earth, Thanks for the video
Generally, I feel better the more water I drink. I know you said that there is no recommended amount for water intake. What might the reason be that I feel this way?
I do drink a couple of litres of water (mostly in tea form) per day, if I drink less than that, I start to feel thirsty and uncomfortable. Also, it seems really weird to me that people would interpret "water" as literally referring to pure water only, and not stuff that's obviously water with a small amount of stuff dissolved in it.
ironically, the ad before the video was for the Pur water filter
I wasn't feeling particularly dehydrated, but this video made me, ironically, go pour myself some water lol. Not a lot but I paused the video to get some haha
One day my co-worker was asking me about some conversion of units for water (I think oz to liters). Whatever the conversion was, it was something like 8 liters. She then kinda looked at me and said "that's more than a gallon! How can I drink all that in a day?" She had read something that she interpreted as saying she should drink at least 8 liters of water a day otherwise, you'll be dehydrated. She may have been off on the specific amounts of water, but it was still really, really high.
I explained to her that it's all a bunch of bs, and that if she was actually dehydrated, then she'd likely feel thirsty or be experience some other severe symptoms. She argued with me about it and I pointed her to various studies and she just ended with "well, whatever you can never drink too much water". THEN I had to explain to her that yes, you CAN drink too much water. After I showed her that water intoxication is a thing, even if it's for a huge amount of water, she started to get afraid to drink almost any water.
I just can't win.
what about drinking water to prevent cramps?
I agree that we probably are too worried about dehydration around the world. My main concern here is that people of different ages and different activity levels need different quantities of water. To make a general statement that the entire population does not need as much water as we think to be hydrated may be false in certain situations. Athletes and those within the population who are very active during the day may even need more than the 800 mOsm/Kg. I feel like, as part of the human race, we do not need to worry about dehydration as much as we do today. But I do, however, feel like water is a very important part of the way that the human body works and to downplay its importance to some degree is not a sufficient idea. Obviously, drinking too much water is just as unhealthy as drinking too little water. It is all about finding a balance that works for your particular body composition and activity level. Finding this balance does not mean forcing water when water is not needed, but it means drinking water when the body knows it needs to replace what it has lost. As mentioned, water doesn't always have to be liquid either. Fruits and vegetables, two things already essential for the health of the human body, are great sources of water as well.
i feel like i more frequently have headached if i drink little water, but this might be only placebo.
Any thoughts on endurance athletes and recovery from exercise with water consumption?
+jhobbz45 Not an endurance athlete, but I did run track for 7 years... Drink to your thirst, and maybe a little extra before you practice (if you're prone to cramping). I went through about 50 oz of water a day (not including water from food or other beverages), though I weighed around 105-100 pounds.
+tinyman392 Not talking about cramps. I just feel like I recovered better if I drank more after hard endurance workouts. But no real proof. Wondering if anyone know any facts about that.
How much is '8 cups' in liters?
Or, the other way around: I drink about 3 liters of various beverages per day. Am I okay, or should I change my behavior?
Please do a video about energy drinks!!!
No video needed. Energy drinks are junk!
So Nestle and parts of Nestle funded some of the water Dehydration study?
Why urine osmolality? Wouldn't serum be a better metric? I have DI , low urine osmolality, but can be dehydrated with high serum osmolality. (when I'm not on my meds)
So wait how i know how much water should i take them?
Donny and Marie are my favorite MOSM's.
I carry around a reusable water bottle with me at all times because 1. I live in the southern U.S., and it gets pretty hot here for most of the year. 2. I'm in college, which means I'm walking around outside all day, and 3. My water bottle saves me money on buying beverages at fast food restaurants. Also, carrying around a water bottle means I end up drinking primarily water and not sodas or coffee.
But does it have any negative health effects to stay a bit above normal water consumption?
+Kiwipai Only if you never pee.
+Kiwipai
Define "normal". What's normal for a big guy in Arizona isn't for a petite woman in North Dakota
+Inorganic Vegan normal as in above to little.
Kiwipai
Not really. You just pee more. I should know. I drink way more than that, because I like water
I am absolutely not getting enough water- I'm a mess who maybe drinks a glass and a half of a water a day. But it's nice to know I'm not as messed up as I thought!
More pictures and animation for us ADDers pls.
What about drinking cold water to cool off?
This video made me thirsty. I know I'm nowhere near dehydrated, though!
Shay Carl needs to see this.
this video is making me thristy af
What do the studies say about drinking water with low pH? pH lower than 4.5? I can not seem to find any studies or information about it.
Retrospective Cohort Study? That is impossible correct?
I do get concerned when my urine gets dark though. Doesn’t that mean I haven’t drunk enough?
Anywhere between a light yellow, to a honey color ( but clear ) is hydrated.
I can attest to the idea that drinking the recommended 8 glasses a day is of no benefit to the average person who does no major physical labor. In fact it's a good way to piss away all your minerals your body requires to stay healthy and prevent disease. My grandmother hardly ever drank water. She lived to be 93 years old. I think she had no more than four glasses of tea a day (in Europe hot tea was served in glasses with metal holders). I used to believe my hydration thermostat was broken. The fact was, I wasn't thirsty, particularly when I ate salads, fruits and vegetables regularly. Needs vary depending on weather and activity and to make a blanket rule of hydration law is absurd and unhelpful.
After gastric bypass surgery, my doctor said to drink eight glasses a day. Is there a basis for that or is it just based on this myth? I have and had no problems beyond obesity.
1. What does urine color tell us about our water intake? Should I drink more water if my urine is yellow, but not if my urine is clear?
2. I was told by a triathlete that when I am doing physical activity (like playing sports or hiking) I should be drinking enough water that I urinate at least hourly. Is there any truth to that?
3. Does drinking more water in any way offset some of the negative effects of consuming soda?
I began drinking more water. Tbh I wouldn’t be surprised if most people are dehydrated. But dehydrated in the sense that they only suffer from minor symptoms that aren’t that disruptive. For example drinking more water actually has made me less bloated.
It's a good way to become incontinent to drink to much water. Could the ozmolaliity of swedish children (my country) possibly be due to eating alot of fruit and therefor peeing out alot of water solluble vitamin and salts like citric acid and other chemicals connected with comsumption of fruit?