Main menu


What would happen without water? The human body would collapse


What would happen without water? The human body would collapse

What would happen without water? It’s a question you might never think to ask, but the answer may surprise you. Without water, your body would lose its ability to function as normal, and it could even collapse entirely. In this article, I will attempt to give some insight into what happens without water in the body.

What would happen without water
What would happen without water?

Water – Life’s First Requirement

We all know that we need to drink at least 8 glasses of water a day in order to maintain our health and keep fit, but do you really know what happens if you don’t drink enough water or how much water should you be drinking? In recent years, dehydration has become one of America’s top problems according to medical reports as most people lack awareness regarding its dangerous effects. But did you know that even mild dehydration can have serious consequences for your health? Not only does it affect the skin and eyes by making them dry, but it also affects your energy levels by slowing down your metabolism. Even worse is the fact that even mild dehydration can lead to more severe conditions such as muscle cramps and heat exhaustion.

Dehydration - A Health Risk

Dehydration is a common but dangerous condition that most people simply don’t recognize until it is too late. Not only can it make you feel ill, but it can also actually kill you, as anyone knows who has tried to run a marathon or work out in extreme heat without properly hydrating beforehand. 

Here we look at how not getting enough H2O in your system impacts all of your major organs, and why dehydration can be fatal. In general, the lack of water causes an overproduction of urine and sweat - leading to fluid loss. Without fluids, your cells will start dying from starvation. If cell death becomes widespread then vital organs like the heart will fail, killing you in the process. (Source: The Life-Saving Power Of Hydration)

Physical Effects of Water Deprivation

As little as three percent of dehydration has resulted in decreased reaction time, muscular strength and endurance, and cardiovascular performance. Ten percent dehydration leads to fatigue, irritability, headache, nausea, dizziness, and lowered alertness. Fifteen percent dehydration leads to disorientation with visual disturbances, inability to focus eyes on objects, and blurred vision. Twenty-five percent dehydration is the point at which one becomes at risk for life-threatening organ dysfunction, such as heart failure. 

Thirty-five percent or more of a person's normal fluid intake can lead to convulsions and death within hours. It is clear that lack of water in the body results in poor health, but what happens when too much water enters the system? While many believe this to be harmless, it actually leads to other complications. For example, there are cases where people have drowned because they drank so much liquid their lungs filled up with fluid rather than air. Water intoxication also occurs when someone drinks too much fluid while not taking into account sodium loss through sweat.

Cognitive Effects

With no water, you’d lose muscle control over your hands and arms within hours. You’d be unable to perform simple tasks, like driving a car or typing on a keyboard, within just 2 days—and you might even forget how to talk after just 3 days! After 6 days, you'd be dead. Our bodies are composed mostly of water; 75% of our brain is made up of it. Without it, we wouldn't have enough fluid in our brains to form memories, learn new information, think logically or maintain clarity when performing high-level thinking activities (such as math). Furthermore, we need water for all the chemical reactions that take place in our cells--even ones which keep us alive--to occur smoothly. 

If there's not enough water, these reactions can slow down or halt altogether. And without an adequate supply of oxygen, every cell in our body will die because this gas is needed for these vital chemical reactions to work properly. For example, the kidneys filter waste from the blood using tiny filters called nephrons. When there's not enough water present to carry out this process, the kidney will fail due to a lack of ability to filter toxins from the bloodstream

Psychological Effects

When we talk about dehydration, it's important to understand that your body becomes dehydrated at different rates depending on your age, weight and how long you've been thirsty. Older people may start feeling thirsty before younger ones and children may become thirsty faster than adults. If you’re severely dehydrated or haven't had anything to drink in a few days, you might experience dizziness, confusion, low blood pressure, nausea, and cramps. 

As the thirst continues and the person doesn't drink any fluids, they can develop more serious symptoms like hallucinations (seeing things), delirium (not being able to think coherently) seizures, and loss of consciousness which can lead to death.

Why are so many people dehydrated?

Before looking at what happens to your body if you’re dehydrated, it is important to understand why dehydration is such a problem for so many people on a global scale. Most of us don’t drink enough liquids in general, and most importantly, we are not drinking enough of our body's fluids – water! Water makes up about 60% of your total weight in healthy individuals, provides cells with nutrition, regulates the internal temperature, and removes waste from every cell in your body. Without it, your organs would fail and you would die. In this blog post, I will attempt to give some insight into what happens without water in the body. 

First off, how much do you know about how much water the average person needs per day? It’s been recommended that men should consume between 3-4 liters of fluid each day and women should consume 2-3 liters each day. This doesn’t include foods that contain fluid, like fruits or vegetables which add another 1-2 liters to your daily intake requirement. But what does it mean when someone has low levels of hydration?

What can you do about it?

You can drink more water or follow a diet rich in fruits and vegetables, which increases your level of hydration by adding fluids to your diet. And don’t forget about sports drinks; for instance, athletes engaged in intense physical activity need to replace fluids lost through sweat that are crucial for tissue health and function. More generally, drinking 8 cups (64 ounces) of water per day is ideal for keeping yourself hydrated. If you have trouble remembering how much you've had, keep track of the back of your hand with a permanent marker! I hope this helped! 

Some great benefits of increased hydration include improved mood, increased focus, decreased symptoms from illness, and an easier time maintaining weight. 

  • Drinking enough water also helps regulate blood pressure levels and maintains healthy kidney function. 
  • Lastly, it's important to remember that alcohol is dehydrating - so be sure not to overdo it at social events! -It's been shown that dehydration causes sleep problems, and lack of sleep has been linked to headaches and impaired performance. 
  • Children who suffer from dehydration may exhibit fatigue, thirstiness, dry mouth, reduced skin elasticity, and sunken eyes.
  •  Women who are pregnant and breastfeeding require extra fluids due to hormonal changes that affect their bodies' ability to regulate temperature. 
  • Dehydration in seniors can lead to memory loss, urinary tract infections, bed sores, and constipation. Be sure to make adequate changes when you're feeling thirsty!


table of contents title