"You NEED 8 glasses of water a day!": MYTH or FACT?!

[@dalysea26]

Thanks for including the fact that coffee still counts! When people would suggest 8 cups of water a day to me, and I would tell them I do get that amount including the tea I drink, they were adamant that tea doesn't count. The idea that throwing a little tea bag in a cup of water was enough to completely negate the benefit of the water always seemed absurd to me. A little googling told me caffeine isn't even that strong of a diuretic, and the amount in tea definitely isn't. I like a little flavor in my water, stop flavor-shaming me! 🤣

[@Julottt]

Soda also counts as water intake since the first ingredient is water and it is not dehydrating like alcohol beverages.

[@oxoelfoxo]

for me black tea is much more of a diuretic than coffee

[@jmc8076]

@@oxoelfoxo Sensitive bladder.

[@jmc8076]

Broth soup counts too as do water based veg and fruit.

[@JustChill-zd4ib]

@@Julottt Alcohol is not overall dehydrating. It causes less hydration at first but later more hydration.

[@lilytea3]

0:16: 🧪 There is mixed evidence on the recommended daily intake of water and its impact on health. 3:18: 🥤 Increasing water intake can improve skin hydration, but the effect depends on the individual's initial water consumption. 6:42: 🚰 Drinking a lot of water may slow down cyst growth in polycystic kidney disease, but there is no evidence to support the recommendation of drinking eight glasses a day for everyone. 10:02: 🥛 Drinking water before meals can lead to a modest weight loss over a few months. 13:18: 🥤 Hyponatremia, a low level of sodium in the blood, is rare and usually occurs in specific circumstances such as underlying health issues or excessive water intake by endurance athletes. 16:43: 🚰 The belief that clear or pale yellow urine indicates hydration is false; urine color varies and does not necessarily reflect hydration levels. 20:11: 🥤 Most people don't need to obsess over drinking a specific amount of water, but it's okay if they want to drink more. Recap by Tammy AI

[@Rikavich]

Metaphorically spat out my water when you mentioned that ADPKD runs in your family. It's so rare to see it mentioned in the wild, let alone from your favorite nutrition KZbinr! It runs in my family as well, and I had the misfortune of suffering from an aggressive presentation of the disease that led to renal failure two years ago at the age of 40 despite a healthy lifestyle. Thankfully that same year I received a transplant, followed by a bilateral nephrectomy a year later as the size of the kidneys was causing significant discomfort. Doing much better now and continuing to drink a lot of water as per my nephrologists' recommendations. Hope you never get to that point Gil (assuming you carry the mutation). Some of my older family members, including the person I inherited PKD from, have much milder presentations and have never required major medical intervention.

[@drott150]

Yet another amazing and very informative video. The attention to nuance, subtlety and detail in _competently_ reviewing the evidence is what really sets this channel apart. Also, the absolute lack of sensationalism, grifting or clickbait is truly a godsend and so rare in med help youtube channels. You are literally acting as a real, competent and well-intentioned doctor with no axe to grind who is truly helping millions of people with your level-headed, accurate and honest presentation. I know it must have occurred to you that you could make more money by selling out and using the nefarious techniques other youtube "doctors" use, but you remain steadfast and true. It is noticed and very much appreciated. And over time, I am confident you will build your brand and business success as more and more people realize what you offer.

[@secretspy44]

Well said.

[@bruceclark4754]

Absolutely agree with this very intelligent review. We should definitely spread this to our friends and family. Gil is a real hero in my eyes. Jes young so hopefully well have him for decades to come😊

[@scienceislove2014]

I sometimes don't skip your ad.. hope that helps.. that's the best i can do right now.. I respect your selfless work.. And lord how criminally underated you are.. this just is not fair.. people spreading misinformation are getting a lot more views.. so many stupid chiropractors out there on the internet.. so overrated..

[@samuraibat1916]

When I voted for this in your poll I wasn't expecting a 21 minute video that was so in depth. I should have known better! Good video, doc.

[@Anarcath]

I've been preoccupied with hydration for so many years forcing myself to drink the 8 glasses and often failing and feeling bad about it. A load off my mind. This is very informative.

[@Better_Call_Raul]

Call me lazy but 8 glasses is just a huge pain in the ass. 3 to 4 glasses is more reasonable.

[@mark-ish]

​@Better_Call_Raul go to #35 in the references list in this video it gives a link to the 1945 study "RECOMMENDED DIETARY ALLOWANCES" page 11 states: "Water. A suitable allowance of water for adults is 2.5 liters daily in most instances. An ordinary standard for diverse persons is one milliliter for each calorie of food. Most of this quantity is contained in prepared foods. Water should be allowed ad libitum (at your discretion), since sensations of thirst usually serve as adequate supply sufficient copper. guides to intake except for infants and sick persons."

[@contextwithjohnmalone]

I’m part of the 27% who requested this video from your poll I’m your community tab. I’m a literal sponge for knowledge (pardon the pun). I love stats and figures and studies. I feel like they help us all make informed decisions. Thanks for this video Gil.

[@justanotherfrog]

I just discovered your channel and I love how balanced and science based it is. It would be really great if you could do a video on ghee and coconut oil- lately I hear a lot of people insisting these are better than vegetable or seed oils and I’d love to see the science on this. Thanks!

[@jimatsydney]

In 2014 a 100 km ultra trail run I was in had a 30% drop out rate. The next year, after investigating the causes, the organisors advised the participants to only drink when thirsty and to avoid non-steroidal anti-inflamitories. That year they had a 5% drop out rate.

[@MKstudiovideo]

Wow, thanks Gil for this epic summary! Exactly what I've been looking for😍 I would just add that for people with a family history of gout and elevated uric acid levels, it's also recommended to drink more fluids. Also for the complete picture, there're some studies showing a benefit of drinking more for a better cognitive performance, i.e. being dehydrated decreases our cognitive performance.

[@jeffreymagedanz8130]

I have a tendency to drink excessive amounts of water and go to the bathroom excessively. Whenever I say anything about trying to cut down, people are always shocked and tell me not to because water is super healthy and more water is always better.

[@AndyMorrisArt]

When I started drinking more water up to a gallon a day. But an average of 10 glasses a day (80 oz.) it changed my Life! I use to have chronic constipation, coupled with an increase in fiber I now never have constipation. It also helps to moderate my daily asthma attack. If I drink 3 glasses of water within the first 2 hrs. upon wakening, then I have just a minor asthma event, but if I don't I get very choked up.

[@Moriah7913]

Can you please do a video on coffee? I hear so many mixed messages on whether coffee is healthy or harmful. And the pesticides in coffee, are those actually something to be worried about?

[@RoxanneRichardson]

I'm an all-day sipper, and always have been (my mom was the same way). I probably average about 8oz (close to 250 ml) of fluid intake every hour from 6 am to 5 or 6 pm, and then I'm done for the day. I rarely just down an entire glass of water in one go. I do pee a lot, but I work from home, so no biggie.

[@AstonAcademia]

May I ask what time you cut off water intake before bed? I think it effects sleep if I drink too close to bedtime 0-2 hours.

[@RoxanneRichardson]

@@AstonAcademia I usually stop drinking after dinner, so around 6 pm. I go to sleep around 9:30 or 10.

[@krc5210]

My mother and father in law, both over 85 have had trips to ER for UTIs and been told they were not drinking enough water. We've tried since then to get them to drink at least 6 a day. As u said they are never thirsty and so forget to drink water.

[@JustanOd]

After my 85 year old mother was treated for a UTI, I encouraged her to drink more water. She developed hyponatremia and was hospitalized. I think this exacerbated her dementia and she died within a year or so.

[@blowitoutyourcunt7675]

Lots of people confuse their skus Hunger cues and end up eating their need for water. It literally takes brain reprogramming fort some lol

[@BonytoBeastly]

Awesome video! My understanding of the research is the same as yours, but there's some evidence showing that ensuring proper hydration can improve exercise performance. So if someone is working out, replenishing the water they use is important, but they may also want to preemptively drink a bit more water to get a better workout in. For example, here's the title of one of the more recent studies linking hydration and exercise performance: Hypohydration but not menstrual phase influences pain perception in healthy women

[@samuelnazaroff4653]

I've had a long history of kidney stone issues and even acute kidney failure in 2019. I was advised to drink around 4 liters of water a day and I get anywhere from 16-20 cups since I fill my water up at the beginning of the day and make it a priority to make sure I get the water intake. Have not had a kidney problem or stones (or at least a noticeable one) in the past 3 years. My question is why it is that how much you urinate is more the important metric than how much water we actually drink in the case of stones?

[@NutritionMadeSimple]

the more dilute the urine the lower the concentration of the compounds that form stones (usually oxalates and calcium) and the less likely they aggregate and form calculi

[@realandsurreal]

Interesting video. I guess I'm an outlier as I drink about a gallon of water everyday, for as long as I can remember. I always have a glass of water within reach, even at night. A good video, but in summary, it doesn't seem like you were really able to uncover anything significant about the question posed about 8 glasses. Myth busted? It's hard to imagine that water has an impact on weight other than giving a feeling of satiety. I do suffer from migraines which are usually triggered by allergens, so drinking lots of water does often help to flush my system more quickly than if not drinking water during the headache. For some reason, coffee also helps with the headaches as well. You mentioned beer, but I don't recall ever seeing any videos from you about the effects of alcohol on health. Keep up the good work Gil, or rather Dr. Carvalho!

[@felicialin5090]

I love water! For so long, it’s been the only thing that really quenches my thirst and cools me off after a nice long walk! Thanks for the science!

[@AlexandruNicolin]

I drink around 2L (~1/2 gallon) of water and about the same amount of dilute, unsweetened green tea a day, in addition to eating lots of veggies and fruit. It does help with satiety, since it temporarily fills the stomach, since I only eat a single meal in the morning. In total that would be equivalent to around ~5L (1.25 gallon) of water a day. I started drinking more water since I had an issue with kidney stones as a teenager. From time to time they would go on a "ride" down my urethra and it was awfully unpleasant. Since I adopted this habit I had no such issues, or with urinary tract infections in general.

[@burt591]

Can you make a video about Omeprazole? The doctor keeps giving my mum Omeprazole (for a couple of years now) but I have seen lots of KZbin videos explaining that it actually makes acid reflux worse, and that by reducing the acidity of your stomach it makes digestion worse. What is the truth?

[@jorgefernandes8174]

Came across your channel and it has quickly become a favorite, I thought I heard a little Portuguese in that accent. Great to see a fellow Lusitanian producing such great content!!!!!

[@alfonso365]

The 8 glasses of water recommendation comes from the Harris-Benedict formula. You need about 1 cc of water for every calorie you metabolize. If you consume the typical 2000 calorie diet, you need about 2000 cc of water... Which is about 8 glasses. You will need more if you consume more calories, eat more salt, sweat more, or suffer a specific illness, as mentioned in the video...

[@pavolhorvath7850]

You may easily see, why that is a false assumption. You have enough water in your body for sake of metabolism. You only need to replenish, what you lose by sweat, urination and breathing.

[@alfonso365]

@@pavolhorvath7850 That's actually what the formula tries to calculate. Not saying it's accurate... Just saying that's where the 8 glasses of water myth comes from.

[@alfonso365]

@@pavolhorvath7850 All the parameters you mentioned are directly linked to energy expenditure and your metabolism.

[@christoffernilsen747]

Source?

[@alfonso365]

@@christoffernilsen747 "Adults: For practical purposes, 1 ml/kcal of energy expenditure can be recommended as the water requirement for adults under average conditions of energy expenditure and environmental exposure." www.ncbi.nlm.nih.gov/books/NBK234935/

[@MadDestructionChaos]

I lead a pretty healthy lifestyle. I exercise everyday no matter the weather. I drink 100 oz of water throughout the day. I haven't touched a pop or juice other than like a coffee for 10 plus years!! I'm 41 but I look 30!!! (And that's not just my opinion. People are shocked when I tell them I'm 41) Great video! Oh and i electrolyte twice a day too. I love my water! And I drink my tap well water. And it's passed all water tests with flying colors!!

[@fadesignyt]

Skin care routine?

[@MadDestructionChaos]

@@fadesignyt Soap and water with with little moisturizer from the walmarts. LOL! Wipe my face down before bed, and splash cold water and pat dry. simple.

[@lazur1]

One hypothesis: For those who consume a lot of processed foods &/or are obese, those 8 glasses of water will help to lose bodyfat. (Probably because water replaces the amount of sugary soft drinks previously consumed.)

[@robinpetersson3081]

I am a stone former and seem to lack the thirst reflex and I hate drinking water. In the morning I fill four large 18oz glasses with water and then I add teas, coffee, hibiscus, lemon, different colorful flavorful concoctions (all sugar free). Seeing these drinks in the kitchen makes me want to drink.

[@jozefwoo8079]

Thank you once again for clearing the mist for us 😊👍

[@jimcarde]

In the early part of your lecture, you report studies where the number of glasses of water seems to be an important variable to consider. What you did not mention then, but did talk about later, is that the body gets water from a variety of sources not just in glass containers. A person consuming food that contains a substantial amount of water, e.g. soup might confound the finding of the study when this intake of water is not controlled. One thing you said that was new to me is that coffee drinkers become habituated or tolerant to caffeine and over time this reduces or eliminates coffee's diuretic effect. Very interesting subject -- keep up the good work!

[@tommystrong2278]

First off - I am a huge fan of your channel - thank you for all the work you have input into spreading science!! I don't know if you take requests on topics - but I would love to see what the latest data says about alcohol and health risks. I know many years ago it seemed like wine industry marketing folks spun a clever tale about wine being good for the heart... it would be wonderful to hear what the latest studies show regarding the detrimental affects of alcohol are on the heart and body. Thank you.

[@NutritionMadeSimple]

hi, we actually went over that exact Q not too long ago: kzbin.info/www/bejne/a6SVhmd9fKeNl80

[@km-bo3zx]

Very timely, as I was just investigating this myself. I’m was looking into the cause and effect of hydration on Blood Glucose. Especially in how it might effect the “dawn phenomenon”.

[@Sparrisen987]

Excellent. I was on the verge of looking into this myself. Thank you.

[@butubuta]

Thank you. You made so many things clear. Please make a video about iodide or iodine supplements.

[@sarajohnstone7128]

Interesting! I normally drink quite a bit of water (4-5litres) in a day just because I enjoy feeling hydrated. I am curious, why do many doctors encourage more fluid intake when someone is ill? (With like an ear infection, cold, flu or some other general illness not associated with kidney or UTI)

[@MrBlaxjax]

I think the idea is water flushes out any pathogens. Whether or not that’s true who knows but a lot of doctors believe it and besides if it merely acts against dehydration it’s good advice. People with a temperature would tend towards dehydration.

[@drupiROM]

There was a documentary a while ago, about the Israeli-Arab wars. One of the thing that stuck in my mind was how much water a soldier would need to be hydrated in the desert. Something like 2-3 gallons a day, 7-10 liters. That was the number their military doctors came to a conclusion after they did a test by marching thru the desert in the hottest month of the year. The Egyptians only issued 2 liters of water a day, and most of their soldiers died or were taken out of combat because of dehydration.

[@dvdmon]

Good thing that most of us are not doing combat duty in a desert? 😉

[@drupiROM]

@@dvdmon Yup. But that dose not change the fact that most people i know drink very little to no water. But they do drink a lot of coffee, cola type drinks, energy drinks and other stuff like that. And they are looking weird at me for drinking none of that and about 3-4L each day depending on the season.

[@pavolhorvath7850]

Super useful! Thanks for relieving me from one little worry I had from time to time.

[@MS-sr6mj]

Volume kinda low for me, but thanks for the video. I knew the whole clear urine thing was going too far. I shouldn't be peeing every five minutes all day!

[@MichaelHorstmann]

Do a video on whether seed oils drive insulin resistance. I keep hearing people say this without citing any evidence in humans.

[@gi4sky]

I’ve literally been studying dietary methods of extending life and healing for over 50 years. One thing that has been consistent is the advice to never drink before or during the meal because it dilutes the stomach acid that is necessary to properly digest the food you’re eating. Is that perhaps why people are losing weight because the food is passing through them undigested. Could this caused them to become malnourished or does this idea of water diluting the hydrochloric stomach acid a myth. I’d really love your input. Thank you.

[@carinaekstrom1]

Interesting thought. But in that case, wouldn't all fluid rich foods also dilute stomach acid too much?

[@tullochgorum6323]

I reseached this recently and it seems that the idea of drinking water before a meal in some way inhibits digestion is a myth. I think it came from the naturopathic movement, who aren't exactly renowned for their scientific rigour. In fact the opposite seems to be the case - water before a meal doesn't dilute the pH of the stomach acid, and may actually stimulate the gastric glands and improve digestion. But drinking acidic beverages like soda or fruit-juice before or during a meal is not recommended, as this _can_ reduce the pH of the stomach.

[@daysoftheboo]

But drinking during a meal can be helpful depending on the food you're eating, if you're eating a soup maybe not necessary but if you're eating something dry not enough moisture I think taking a sip of water can help move it down

[@JustMe-999a]

Water is called the universal solvent for a reason. It dissolves a lot of stuff, including a lot of food. Seems like water would be helpful

[@RichRich1955]

Stomach acid triggers the lower esophageal sphincter to close preventing Stomach contents from going back up the esophagus so diluting the acid makes reflux worse.

[@anabolicamaranth7140]

Depends a lot on weather conditions and what I’m doing and eating. I don’t need much water even in the summer if I’m eating a lot of watermelons.

[@BorselinoThadchack]

how many cups of coffee is ok? plus, is coffee counting as drinking water?

[@boonavite3200]

I ear rice, which is cooked with water 1:1, with meat/ vegetable broth, stir fried vege, and fruit for each meal. That’s a lot of water.

[@krisfarrugia6490]

Informative video as usual, thanks Dr. Gil :)

[@davidekdal7190]

Regarding the increased metabolism after drinking water I immediately thought it had to do with the fact we're drinkink cold water that the body has to heat up to match body temperature. Is this a plausible explanation? If not because of the temperature I would imagine it has to do with the stomach activating metabolic processes which in themselves has to demand some energy to work.

[@sivam126]

Do you thinj we need more water on a higher fiber diet to support digestion? or separately when one is fasting?

[@kinpatu]

Water requirement also varies significantly with carbohydrate load. I drink over a gallon a day on low carb diet.

[@stepannovotny4291]

Government and nutritional organizations in North America define 1 glass of water a 8oz or 240mL, and in Europe as 200~250mL. I have a theory that people who consume excessive salt should combine their salt powder with K, Mg and possibly Ca in proportion, and drink more water to allow their body to excrete the excess. I find that my sense of thirst works well if I take take breaks from work every couple of hours to relax, breathe deeply and reflect upon how my body feels. Working incessantly or continuously without taking breaks causes me to neglect how I feel and leads me to abuse my physiological well-being. Therefore I would posit that staying in touch with how one is feeling, whether it be through vipassana or breathing exercises or even just fractionation by taking breaks and relaxing, is extremely important so that one can know when the body craves necessities such as water, exercise, sleep, nutrition and so on.

[@Better_Call_Raul]

"If you exercise you lose more water so you need to increase intake" Does this apply even if you don't sweat during exercise? I am exercising but I am not sweating. I used to sweat during exercise when I was younger but now perform less strenous exercise and as a result, do not sweat. My heart rate is elevated for 30 minutes but I am not sweating.

[@yangtse55]

Almost none. But my main meal is veggie stew. I skipped food for a few days and had moderate gout because I didn't compensate.. My urine throughput is approx 2 litres.

[@shimmer8289]

I have some questions: I have my pre diabetes down from 6.7 to 4.7 thru weight loss 30 lbs so far and low carb foods 1 where on my blood test is apo b listed? 2 I eat only egg whites as I read studys on link with colestral in yolk is it true 3 I eat as main meal either 5 ounces skinless chicken breast or lean pork are these items heart healthy pan seared with 1 tabkespoon olive oil 4 I've limited vegetables, fruits and grains to pretty much nothing as my app listed them as high carb. Should I incorporate at least green salad with olive oil vinsgrette into every other day? 5 my doctor when he discovered I drank 1.5 litres if water told me to drink 3 cups at meal time quite a shift. That is 24 ounces water a day. I noted a comment on early stage kidney function on blood test my instincts are his instructions are related. I hope either the dr or community can help. Where I live the free nutritionists say eat 2000 calories and 150 carbs a day. If I did that I'd still be obese snd on a diabetes drug. Struggling with my nutrition tbh

[@tdgdbs1]

Gout sufferer here; 4L of water helped significantly with flare up and renal function. GFR up, uric acid down.

[@soniasargeant1828]

I am a Christian and when I got saved I reduced the amount of water and my skin deteriorated so you are right that water helps with skin care

[@lagunelaguna3055]

what

[@falconbritt5461]

They don't tend to use environment as a factor in these studies, which they really should. I moved from Seattle to Taos, New Mexico 8 years ago, which is high desert and has only about 10% humidity most of the time. Just breathing (not exercising) we lose massive amounts of water through the day. I find I need to drink several times as much water here per day just to prevent kidney infections. I can hardly keep up with it. (Also need to add a pinch of salt here to get the water to absorb well enough, oddly.) Needed to up my salt and trace mineral intake a lot as well to feel good. Have had to stop tea and coffee, both of which I miss, but the dehydration and kidney infection issues make them very rarely worth the risk. (Never was a drinker of alcohol.) People drinking a lot of water - I was told - do need to take much more B vitamins, from what I have read - water flushes them out, apparently. Finally, my elderly mother - who drank tea all her life - now often gets bad faint spells (with nausea) from dehydration because she isn't drinking enough water but still drinks tea. I keep explaining it to her and admonishing her, but she keeps forgetting. So a suggestion: Get the water habit going well earlier in your life, folks, so it's a routine, just in case your memory gets problematic when you get older.

[@carlkligerman1981]

Like most issues around eating and drinking I do think good old fashioned common sense goes a long way. I drink when I am thirsty, and drink two glasses of lemon water with ACV immediately upon waking up, whether I am thirsty or not, for my overall health. Tops I think I average a litre a day (4 cups) of just water, plus other beverages throughout the day. Anymore seems excessive to me.

[@contrarian717]

Well said. Agreed

[@paulmaxwell8851]

In my observations two groups obsess over water: schoolteachers and yoga instructors. In my local elementary schools the teachers stop the class every hour to enforce water drinking whether the children like it or not. Apparently they'll die if they don't get enough! And yoga teachers seem especially focused on water intake. Arthritis? Not enough water. Cancer? Not enough water. Aortic aneurism? Not enough water. Let's not forget that mental illness is sometimes involved. I know of two women (for some reason it's often women) who died of hyponatremia after treating their water-induced headaches and confusion with even more water! Both were health and fitness obsessed.

[@shroud1390]

I shoot for 100 fl oz per day. Sometimes tea, sometimes coffee, sometimes water and vinegar, etc. when I play tennis I bring a gallon of water and often finish it plus what I prehydrated with

[@weston.weston]

Gil, PCKD also runs in my family. Seven of my ten siblings have been diagnosed with it. I have been assessed and don't seem to have it yet, fingers crossed.

[@JohnHenryEllis]

For what it's worth, at age 72, I drink about 1 liter of black coffee a day and 1 liter of tap water a day, sometimes some green tea after 12 noon as I don't drink coffee in the afternoon. During the day I don't stray very far from a bathroom or tree.

[@francisbacon7738]

Can you do a video on animal protein and the risk of cancer? I am very interested in the the China Study, can you review?

[@michaelchristensen2786]

Nice video! But how about a video on GMO foods. My wife says to stay away from them but I'm not so sure. Also, Europe has banned them so what's the real scoop. Are GMO foods nothing to be concerned about or should they be avoided?

[@garydinmore1598]

Thanks for sharing. I always wondered about how much water we needed

[@michaelhimes8778]

One thing to explore is the dilution effect water has on high sodium foods. Rick Johnson’s (podcast #2 with Peter Attia) work shows that you can have better blood pressure outcomes by drinking lots of water with high sodium meals.

[@jameschesterton]

Yet another extremely simple and biological need that we, as humans, have to be told how to do, and yet every other animal on the planet seems to manage this just fine. Funnily enough, every other animal on the planet only drinks water, no tea, no coffee, no soda and no alcohol. Also, they only drink when they are thirsty, and not because they feel there will be some other amazing benefit to being more 'hydrated'.

[@bruceclark4754]

I really love your balanced and informative videos Gil. Could you possibly do some on the pros and cons of vegetarianism or veganism sometome? There is a dearth of science based videos like yoyrs on youtube.

[@gordsimpson8916]

Thanks. PKD runs in my family, and I probably have it, and I am now trying to drink 3+L per day.

[@aroundandround]

The science seems consistent with what I can reasonably drink, which is about 5 glasses plus possibly more if I sweat a lot during exercise, however drinking by thirst alone based on my experience tends to inadequately hydrate me, so I have to consciously finish my water bottle daily.

[@jrb_sland]

Aging [74] Canadian man here. I don't count glasses [or litres] of water. I pay attention to signals from my body - if I hunger, I eat, and if I thirst, I drink. Works for me - your mileage may vary...

[@dvdmon]

I have never liked drinking water, and have tried to do a least some of this water drinking at various points of my life, but usually fail within days or at most weeks, and go on to not drinking any. I do have one big (16oz) mug of decaf coffee every morning, and at least for the last 6 years my diet is in large part fruits and veggies, with some grains and legumes mixed in, so maybe that helps? Whenever I have added water drinking to my daily regimen, I've never noticed a difference in how I feel. The only discernible difference is the color of my urine and the fact that I have to pee more, lol! I know some people who seem very sensitive to "hydration" and are always drinking so I wonder if it's individual thing, and also based on how you grew up and what you are used to? I simply don't notice differences, but I do get thirsty occasionally and will drink something, but it's pretty rare. I think more I just eat something "refreshing" that I know has lots of water, like fruit. I think people talk about confusing thirst with hunger and maybe that happens with me too, but since water is in both, does it matter? Other than you are getting a bit more water by drinking, and faster, and also with fewer calories. Speaking of which, this seems to be more of an issue for those who need to lose weight or have difficulty maintaining a healthy weight, which I guess is most people these days. I've I've been at a healthy BMI for over 5 years straight now, so it doesn't seem an issue for me. Maybe if your food intake is very calorically dense on average it could be an issue though?

[@tylercooper9090]

I work an outside, manual labor, job. I drink about 1gal of water a day (with electrolytes added). I always have my morning coffee (about 12oz) & a couple of diet pops (8 oz each)

[@pedro.almeida]

Portugal here, usually drink about 6 glasses of water (1.5L) plus all the liquids (2 small coffees, bit of soup some days…)

[@Card_Crazed]

I used to add 1.5 litre of water to what I normally ate/drank. That was working, until I started on Jardiance. I have upped it to 2.5-3 litres because of the Jardiance. I also eat a diet that tends to be on the diuretic side, so more water is favourable to me. When summer finally hits, I may have to increase it again, but I go by thirst for my water needs

[@GeoffInfield]

This has annoyed me for years - nobody seems to have noticed we EAT water, and I'm so sick of being told to drink less coffee because "it's a diuretic" - NO IT ISN'T! A coffee BEAN is, but I take my beans with 400mls of water so massive net gain. After RNY GB surgery I was told to carry a water bottle cos we eat much less food now. I said I only drink coffee and my surgeon said "that's fine". Water isn't a drink anyway, it's an ingredient. Telling me to drink more water is like telling a cake lover to eat flour 🙄

[@logan_12]

Next i want you to watch dr. Pradip jamnadas, who is a cardiologist in the US.

[@stepannovotny4291]

Answer: I feel at my best viscerally when I drink 3~4.5L of water per day, and I do add 200mg/L of an iodized NaCl(26.7%)/KCl(46.7%)/MgCl·(6|8)H0(26.6%) powder to my water, which corresponds to the commonly accepted RDA/AI ratios. Drinking more or less does not feel "good". Context: I'm mostly sedentary at room temperature, but I swim 1.6Km at every second day and I go for a walk or bike ride on my off-days. Sleep aprox 7~8hrs/day. Age aprox 60.

[@stepannovotny4291]

WTF? the comments strip our Unicode subscript characters! Restated in regular script: "MgCl2·(6|8)H20"

[@mnminnmn]

i found it easier to have a larger jug around and take sips throughout the day. and def right before meals or during, just have a very small amount. dont dilute stomach acid for proper digestion.

[@babybalrog]

As I was told, the 8 glasses a day study came from long ago research that asked people how much they drank and tested them for signs of dehydration. Those that drank the most - the 8+ group - had the least symptoms. Not None, just least. which just seems axiomatic to me. As said, food contains a lot of water. So when fasting, water intake needs to go up 2-3x. Surprised there was no discussion of the common thought that in obese people, food and thirst cravings can seem the same. thus the common recommendation to drink water when your hungry and wait ten minutes to eat. Fasting helps disambiguate those cravings. to your point about Thirst and Dehydration (ref 32). I've always heard that in reference to survival situations, when you are loosing water rapidly to the heat. And ref 32 specifically says; "It is to be emphasized that the conclusion is limited to healthy adults in a temperate climate leading a largely sedentary existence" And to hyponatremia, we sadly had somebody at my college die years and years ago, from drinking too much water during pledge week when he was hazed into drinking gallons and gallons in a day. Based on another doctor on youtube, who was going over a case study, is there more of a risk of hyponatremia if drinking DI, purified, Reverse Osmosis, or other "pure" waters?

[@uribar-ner5055]

Please explain the relation between diabetes and water consumption. Do diabetics need to drink more? Thanks

[@jondel3304]

Isn't there two requirements for water? The first being what you need for Basal Metabolism, Thermic Affect Of Food, & NEAT (Non-Exercise Activity Thermogenesis), around 8 8oz glasses per day. Then, you add the neccessary amount of additional water for EAT (Exercise Activity Thermogenesis)?

[@pavolhorvath7850]

No, there is not, because you have plenty of water in your body. The only requirement is to replenish what you lose.

[@jondel3304]

@@pavolhorvath7850 makes sense!

[@sad_red_panda]

I have about 1.5-2 liters per day, coffee, tea and plain/sparkling water. I follow my thirst, not trying to drink specific volume.

[@tonyb8132]

I’m 66 and I get calcium/oxilate stones so I typically try to drink about 2 liters a day with lemon juice. Or until I have mostly clear urine. Works for me.

[@JackFalltrades]

I run and live in a hot climate, so I drink a lot of water. My doctor told me something I thought I'd never hear, "Increase your salt intake." My blood tests indicated low sodium and chloride! 😀

[@StushPothong]

Sodium is perhaps the most important performance enhancing mineral you could consume. And it's been unfairly demonized by the medical world. If you train hard in the gym or compete at any level in any sport you probably would have discovered the massive difference electrolytes like sodium can make.

[@davidtrapp7429]

Btw there are water bottles that automatically track your intake. Hidrate Spark PRO Smart Water Bottle is one for example. Not my company😂 just thought maybe someone might find that interesting.

[@majuscule8883]

Smart bottle

[@Lennybird91]

I'm estimated to lose about 500mL of fluid by sweat in typical 5-8km run. This probably isn't factoring in the 90+ degree days either. I've been experimenting with varying degrees of additives, trying to more or less simulate coconut water... By adding potassium citrate powder, sodium-chloride, etc. to my water in fairly small amounts to make up electrolytes. Meanwhile I just keep coming back to the importance of the hunter-GATHERER (emphasis) foraging of simple sugars from fruits and its impact on running performance. It quite literally is night-and-day if you preload (while otherwise fasting) just a few grams of simple-sugars... So instead of something like Gatorade I'm trying to shift to having things like raspberries, blueberries, strawberries, and bananas on hand to eat 30+ minutes prior to my exercise. So in short, I'm trying to better track my electrolytic balance as well as my glucose intake for athletic performance (with the key goal of being overall more healthy). To me it's kind of astounding how hard it is to obtain the 4,700mg of potassium in an American diet, even as a vegetarian like me. I tend to fall short of that, but I'm striving to be better by eating more green salads. Another awesome video I intend to watch a few times, thanks.

[@AZ89231]

Glaring missed recommendation for people to drink more water on appetite suppressing medications, particularly GLP-1a or other incretin mimetics, phentermine, topiramate, etc. most other conditions will likely have compensatory mechanisms, but when this compensatory drive is dampened pharmacologically, more counseling in fluid intake is required.

[@dekyor9547]

Damn 16 glasses? Can you even go outside without a toilet close to you?

[@matijakrajnc7576]

Can you make a video about hydrogenated vegetable oils?

[@LateNightCruisers]

Make a video regarding hiatal hernia and hiatal hernia syndrome; regarding irritation of the vagus nerve. All my doctor visits not one of them has concluded this issue.

[@elhant4994]

My only intake of pure water is in the morning, around half a cup. Otherwise i drink tea, coffee, soda, fermented milk and drink water only when I'm thirsty and/or exercise. When I tried to forcefully drink more water, it was very uncomfortable and annoying to pee constantly.

[@PaulRamen]

You didn't mention CKD in your special cases. Do they benefit from more water ?

[@jimmaworkurgessa8247]

Great info!

[@SA39_inAZ]

Thank you for this video!

[@Bonnie-yu3kj]

I know you fact check people at times. Could you do one on Dr. Brooke Goldner and her claims that green smoothies have some profound effect on autoimmune diseases? You are so respectful that I would really love to see you do this. Thank you.

[@lskwong9113]

I drink 3 mugs a day which is about 1 litre. But I eat at least 5 servings of fruits and veggies, use very little salt in cooking, and only do light exercise. When it's time for colonoscopy, I have a hard time taking in 1 litre of the prep let alone 2.

[@obfuscatid]

I drink a minimum of 80 ounces a day to help my kidneys (eGFR), but try to avoid more than 100 so as not to deplete electrolytes etc. and reduce trips to the restroom. Individual homeostasis is key.

[@mortalstorm]

With all due respect to Dr Goldfarb, recommending 3 liters of water for all kidney stone producers, would need some qualifications. For example, do you really want to recommend the same amount of water intake to a 90lb person and one who weighs 250lbs? It would make sense that the heavier individual would require more than the recommended amount, and the smaller person would require less.

[@Kermit_T_Frog]

I have been battling urinary tract infections, and for the past couple of years have struggled to get my water consumption as high as 8 cups. It makes me sick to my stomach, and has me going to the bathroom every 30 minutes. Even reducing my intake 6 hours before going to bed, I'll be getting up to go the bathroom every hour.

[@UCSD04]

Thanks for your fact finding video. Could you review some video of SugarMD channel. Thanks

[@TessaPK52]

What about club soda with some lemon or lime juice?

[@thall3827]

How much water do I drink? If you mean actual water, about two glasses a week. Other liquid? Not really sure but I don't really get too thirsty. I feel like a lot. Probably the equivalent of 8 glasses a day.

[@richardjaffe9972]

Surprised the nephrologist stated a specific amount of water intake without regard to weight for those that form stones. Also was wondering what affect drinking water before a meal would have on digestion considering the stomach acid would be diluted.