What Happens When You Drink Too Much Water

Narrator: What do you think of when you hear the word poison? Arsenic? Cyanide? How about water? Life couldn’t exist without water, but in the right circumstance, water can be as dangerous as any poison. Your kidneys filter out
excess waste and water from your bloodstream. But they can only process
800 to 1,000 milliliters of water an hour, and
if you somehow managed to drink more than that
without throwing up, you could run into trouble. Because you’re drinking faster than your kidneys can process it. So the excess ends up in your cells. Normally, your cells are
surrounded by a carefully balanced solution of sodium and
water, which flows in and out through tiny holes in
the cellular membrane. So it keeps the sodium
concentration, both in and out of the cell, balanced. But when you drink too much water, the sodium solution gets diluted. It’s not salty enough. So some of that excess
water rushes into the cell to restore balance. And that causes it to swell up. Doctors call this water intoxication, and it’s a big problem. Now, most of your cells can
handle the swelling to a degree, since soft, flexible tissue
like fat and muscle can stretch. But for the cells in your
brain, it’s another story, because your skull isn’t stretchy. It’s bone. It’s hard, like a rock. So, as your brain swells it
builds up pressure in your head. At first you might experience
headaches, confusion, or drowsiness, but as
the pressure increases, you risk brain damage,
coma, and even death. And it could all be over
in less than 10 hours. A 64-year-old woman for
example, died the same evening after drinking between 30
to 40 glasses of water. And a group of US Army trainees suffered vomiting and seizures after
downing over two liters per hour after a tough day of training. But it’s marathon runners who
need to be especially careful. A study found that one
in six marathon runners develop at least mild water intoxication, because the race stresses their body, including the kidneys. So they don’t excrete
water as efficiently, which can cause water to back
up into the blood more easily. And the problem isn’t unique to water. For example, the same thing can happen if you down too much beer at once. That’s called potomania. The good news is, severe
water intoxication is rare, and is more likely to
happen in people who have kidney issues, since
they can’t process water properly to begin with. Plus, there is an easy way to stay safe. The average healthy adult
needs somewhere around three to four liters of water a day. And since this can come from food and other drinks too,
drink when you’re thirsty, and then stop.

100 thoughts on “What Happens When You Drink Too Much Water

  1. I just finished drinking my 500ml water bottle and I had 2,6L of water today. Am I going to die? (i’m 15 and 136 lbs)

  2. Are you a doctor?????? I just hate it when people come on YouTube thinking some bull nonsense. Water is good for you people. PERIOD…….. 🤦🤦🤦🤦

  3. This happen in china when a girl brain was getting bigger and then she drink 1000000 water botels and then blew up blood was every where

  4. I dranked 20 cups of water and I’m dead ass having a head ache
    I’m drinking water because I’m sick and I wanna flush out the bug

  5. i thought water is the only thing which causes no damage to our health but now i have to believe that nothing is good if taken excessively..

  6. I drank two 24 ounce water bottles today I’m scared I drank to much I’m scared😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭

  7. For those who want a understandment and don’t know when to drink water or to much water

    1: You can drink at least 1-1.5 cups of water every hour since your kidneys will digest the water which then will make you go to the bathroom, so go to the washroom right away

    2: drink when your thirsty but don’t drink when your not

  8. I was rlly thirsty and gonna drink like 4 bottles of water and then it said 800 to a thousand mL a hour as I just finished my second bottle 1000 mL

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