What If You Stopped Drinking Water?

What If You Stopped Drinking Water?

Every living organism we know of requires
water to survive – it’s part of the reason we look so feverishly for water on other planets
across the universe, and consume it consistently every day here on Earth. So what would happen
to your body if you stopped drinking water? Of course, when we say ‘water’ we’re including
all fluids which simply contain water – like juices, pop, or tea. Much like the desire
to breath in oxygen, thirst is a survival instinct. H20 is the most abundant molecule
in the human body making up, on average, 65% of an adult. As a universal solvent, it carries
nutrients and hormones through the body, regulates body temperature, cushions our joints and
even lubricates our eyes. You produce around 1.5 litres of urine every day, with another
litre lost from breathing, sweating and…pooping. So it’s essential that the body replaces this
liquid. The thirst centre of the brain is located
in the hypothalamus, and is constantly using sensors in your blood vessels to monitor the
amount of sodium and other substances in your body. For example, if you sweat too much,
your blood volume and pressure fall. The brain then detects this change and creates the urge
to drink something, NOW! So what happens if you are unable to satisfy this thirst? The initial signs of dehydration are the obvious
dry mouth, following which your urine becomes darker with a stronger odor, as your body
attempts to conserve more fluids. The lack of H20 then begins to affect your brain – you
may feel light headed, have a slower response time and decreased ability to feel pain. In
fact, when you’re dehydrated, your brain tissue literally shrinks. In studies observing hydrated
vs. dehydrated participants, the same task required more brain power and oxygen in dehydrated
individuals compared to those fully hydrated. After a day or two with no fluids you’ll stop
peeing all together, have trouble swallowing, suffer from muscle spasms and likely experience
nausea – after all, your body can survive without food much longer, and attention to
digestion is not a priority at this point. Eventually, victims may become delirious with
severely impaired brain function. Interestingly, studies looking at elderly patients who suffer
from delirium, found that many are simply suffering from chronic dehydration in the
first place. After even more time without water, the blood stops flowing to your skin,
reducing heat loss but increasing your core body temperature. This can lead to a grey-blueish
tinge to your skin. Beyond 3-5 days without water, and your body will begin to shut down
it’s organs, and eventually the brain. Of course, unlike the plentiful oxygen we
breath, only 2.5% of all Earth’s water is fresh; most of which is locked up in glaciers,
ice caps and underground lakes known as aquifers, leaving less than 1% available for drinking.
And most of this water is actually used to grow crops; approximately 500 billion litres
of freshwater is used daily for agriculture in the USA alone, with another 500 billion
litres to cool electric power plants. And as our personal drinking sources become increasingly
contaminated, over 783 million people on earth are unable to access clean water. Scientists around the world are trying to
find solutions to this problem – from attempts to remove salt from ocean water, tap into
underground aquifers and creating innovative water filtration systems. If we look to space,
NASA has developed technology for astronauts to turn their urine into water more pure than
what we drink on earth. But we can’t just rely on science and technology – perhaps the
solution relies on us as a species to understand and contribute to this global water crisis. If you want to help in the mission to end
global thirst, join in World Water Day on March 22nd. There are a lot of really amazing
projects out there, like Water.org or even the awesome UNICEF app which donates 1 day
of clean water to child in need, for every 10 minutes you put your phone down. We’ll
leave links in the description for these and other great water charities. Small investments
really do make a huge difference. We’ll be donating all the proceeds from this
video to a water project close to us called Morocco 5 Villages – so thanks for supporting
and watching. And subscribe for more weekly science videos!

100 Replies to “What If You Stopped Drinking Water?”

  1. I can confirm this is true. I didn't drank water for two days and I wasn't hungry and my body couldn't detect that I was even thirsty.

    I couldn't think straight and had slight hallucinations.

  2. "Scientists are trying to find solutions to access clean water by removing salt from the ocean." What kind of retarded scientists are they? one hand they want to save the ecosystem but on the other they don't realize that removing salt from the ocean would virtually kill all the species and cause the largest mass extinction in earth's history.

  3. My old SCIENCE teacher hasnt had a glass of water in over 40 years. He just drinks microwaved doctor pepper and coffee. I'd hate to see his organs

  4. Hahahaha before I didn’t drink or eat for 10 days straight. I collapsed and couldn’t stand up.1-2 days, BULLSHIT

  5. Drink water!
    Here's my story: One day, I woke up at exactly 6 AM, not from an alarm. I woke up feeling extremely sick I ran to the bathroom and threw up. Threw up for 4 hours! It was around 10:30 when I stopped. I remember looking in the mirror and seeing I had barely any color in my face. I went to the emergency room and had to get an IV. And it was all because I was dehydrated. I did drink water, but not enough to keep me healthy. But the reason that I threw up that specific day was because: the day before, I got a drink at the mall. It was a big drink, but I didnt drink all of it. I drank around one fourth of it. So the next day I threw up, because I drank a lot of liquid suddenly. Dont be like me

  6. Just eat half the amount of meat and you save more than all these so called water saving projects. Animal industry is the biggest polluter and requires the most water of all agriculture. Oh and the pollution.. we get that also from animal industry the current amount of crap is so high that is seeps in our ground water and surface water.

  7. I drank less than 500ml of water today and I don't feel thirsty at all.
    rather, if I drink, it's painful. I don't know what to do not do any doctors know what causes it ….

  8. I hate water so much. Ik it's a first world problem but I actually gag whenever I drink it. And don't tell me it doesn't have a taste, why do people say some brands of bottled water tastes better than others if water doesn't have a taste? I can't help it I sometimes feel physically sick when I drink it. It's been this way since I can remember. I hated it even as a toddler. The ONLY time I drink it is if I just did sport and have nothing else available. Otherwise I drink fruit juice or cordials (mi wadi/ ribena etc…). I feel really bad about this but I just can't bring myself to drink it. Oh and I'm not a picky person when it comes to eating, I like pretty much anything. The only thing I've ever tasted that I don't like (other than water) is penicillin medicine (liquid) and been boozled 😂 Also if you read this far either you have the same problem or you think I'm an idiot 😂

  9. I have a water drinking issue, and I almost had to go to the hospital today because I haven’t drank any water in 3 days (due to me completely forgetting to drink water) and I developed a fever, severe dizziness, shortness of breath, low blood sugar & pressure, and all that good stuff.

    My mother KNOWS that yelling/loud noises trigger my anxiety but she STILL yells at me to drink water.
    So then I begin to have a panic attack, and when I was crying. I realized


    Which is a VERY BAD SIGN!

    And I started to feel lower back and abdomen pain and I hadn’t gone to the bathroom in a day.

    my kidneys were

    But NOW I’ve drank two juice boxes and a small glass of water within the last 4 hours. And I’m slowly but surely starting to feel a little better, and I’m slowly drinking more.

    (For me drinking a lot when your very dehydrated is very overwhelming so I’m taking small sips at a time until im better)

    I’ll probably be like this for a few days, might have to go see a doctor.

    At least I’m alive 🙂

  10. You mention that dehydration decrease pain but Medical research found that dehydration may make your brain more sensitive to pain. Men in the study showed more pain activity in the brain when they were dehydrated than when they were given plenty of water to drink.Sep 28, 2018

  11. I don't drink water water, I drink Coca-Cola.
    I hate the taste of water (yes, i taste water) and its not the pipes.

  12. This happened to me yesterday I was biking and I didn't drink water o was so thirsty I feel dizzy and my sights turned Yellow I can't see anything

    Is this normal?

  13. This is completely bullshit. Without water your body taps into your fat storage to create metabolic water. you can go days without water. Snake Diet guy went 7 days no food or water.

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