Severe effects of dehydration on the brain

Water makes up at least two-thirds of the human body. To be specific, Blood is 85 per cent water; your muscles 80 per cent; your brain 75 per cent and your bones are 25 per cent water, which depicts the importance water plays in your health.

We will not say that Drinking 16 ounces of water can raise your metabolic rate. Yes, you heard it right! It is not just about drinking 8×8 / 16 ounces a day. The right thing is that you have to fulfil at least 16 gallons of liquid in your body. It can be all through water or can be a combinative mixture of water, juices, food moisture, beverages etc. Of course, we cannot ignore other mediums of liquid in our body. So, saying that Drinking 16 gallons of water will make you healthy is somewhere not correct. Because there are chances that you may end up getting yourself overhydrated which is not at all a good idea to get the benefits of water. It will hamper your health.

While following the way to get healthy with the help of water, if you are able to carry through 2/3rd or close to 2/3rd of water in your body. That’s kind of sufficient unless you’re living in Sahra you will definitely see an increase in your metabolism rate by as much as 35 per cent.

Water is considered as miracle drink when it comes to getting relief from the spate of diseases. It is even mentioned in the Vedas that drinking water in adequate amount can help to relieve stress, increase memory, improves mood ultimately your overall brain health. Moreover, drinking it with several herbs increases its power of defending us from even newly aged diseases.

Anyways, let’s talk about dehydration in a profound manner. Dehydration can happen to anyone and there are certain ways it can happen. Not just by careless drinking habit of ours but from frequent sweat loss & urine, one can experience dehydration. Subsequent dehydration can lead to several health problems like Migraines, constipation and kidney stones. When you are dehydrated, you are most prone to irritability, anxiety and fatigue.

Not forgetting to mention here that dehydration causes brain shrinking. Exactly! well, don’t think in a way that it shrinks and shrinks & vanishes. Not that many people know but the main reason to headaches are typically brain shrinking where your brain actually shrinks in volume. When you are dehydrated, your brain tissues shrink and need to work extra hard to accomplish a task.

Even mild or temporary dehydration can alter your brain function and impact your mood as revealed in a 2013 case study, 3 in which 20 healthy women in their mid-20s were deprived of all beverages for 24 hours. While no clinical abnormalities were observed in the biological parameters (urine, blood and saliva), thirst and heart rate did increase and urine output was drastically reduced. As expected, the urine also became darker.

The different parts of your brain communicate through the nervous system, which gives electrical signals to your body using the nerve pathways. When you are dehydrated, the nervous system can’t communicate with your body and gives rise to a number of symptoms.

Dehydration-induced effects are sleepiness, fatigue, moodiness and confusion. It easily got reversed within 20 minutes of drinking some water. Well, cold water worked better in terms of rendering faster relief.

A study says that—

Cold water absorbs 20 per cent faster than tepid water, so to increase the speed of recuperation, one must drink chilled water.

A lot of people suffer from chronic dehydration it not only affects their health but also brain functioning.

“Given the limited availability of brain metabolic resources, these findings suggest that prolonged states of reduced water intake may adversely impact executive functions such as planning and visuospatial processing,” the researchers said.

The dehydration causes severe effects on brain health. To tackle it you need to understand the need for hydration. By this, we mean you need to understand you must compass the signs your body gives you throughout the day.

First, the basic one is thirst, drink when you are thirsty. Try keeping a bottle of water along with yourself on your table, within your bag. Just keep it in front of your eyes to remind yourself of drinking. Thirst is one of the one obvious ways to ensure your individual needs are met on a daily basis.

Second is Excessive hunger. Yes, well if you are too much hungry then certainly you are dehydrated first then for food. So, if you feel hungry, drink a glass of water and wait 20 minutes before having your scrumptious snack.

Third is little unknown but if you know that sugar cravings in particular — is another common sign your body needs more water. In fact, aside from thirst, hunger is one of the first tattler sign of dehydration.

Fourth is dry skin— Yes, dry skin is also one of the reasons that you are dehydrated. If we summarize all these body parts’ hydration needs & calculate their water percentage altogether. Then, we’ll see that 64% of the water we actually need to render them with, for their proper functioning.

Last is dry eyes— Tears are necessary for providing clear vision, Dry eye occurs when there are insufficient drops of tears to nourish the eye. Tears wash away foreign matter in the eye and help reduce the risk of eye infections. Symptoms of dry eyes include irritation, excess watering, blurred vision and feeling foreign matter in the eye.

As a symptom of dehydration, the best treatment for dry eye is rehydrating by drinking plenty of water.

If you aren’t carrying around this much of water then your skin can become extremely dry, inflamed, itchy or splotchy—and you can even break out with eczema. Constant dry skin can age your skin, too.

Note: Delirium (an acutely disturbed state of mind characterized by restlessness, illusions, and incoherence, occurring in intoxication, fever, and other disorders.) & unconsciousness are two signs of acute and severe dehydration that could be life threatening and need immediate medical attention. These two are the other signals indicating you need to drink more water.

What does a proper hydration does to your body?

Relieves you from dizziness and irritability

When you are severely dehydrated, your blood pressure drops, your brain may not get enough oxygen, and you start feeling dizzy. This blood level gets balanced when your body gets sufficient amount of water. Your blood starts pumping better; your brain gets enough oxygen to make you active for long hours.

Improves cognition

Hydration improves your cognition. It helps you think better in a positive direction and allows your brain to function optimally. Our nervous system is a web of neurons that is usually engaged in helping the body to fulfil its daily necessities.

Improves Work efficiency

Certainly, hydration improves efficiency. It keeps your senses awake by making you feel fresh and this way you are available to work for longer hours. People say if you’re tired from the brain then in no time your body feels the same. Dehydration does the same it devastates your brain eventually ending making you feel dizziness, tired from the body. So, it is better if your grey cells are hydrated adequately.

Impairs your driving ability

It’s your brain that makes your body parts function acutely and being dehydrated while you are behind the wheel may cause you some serious ramifications. Let’s see the following case study done by researchers on drivers—

“During the normal hydration test, there were 53 driving errors. That number rose to 107 when the men were dehydrated — the same mistake rate as that when drivers were either sleep deprived or at the drink-drive limit. The researchers …they think that dehydration leads to reduced brain activity as well as a drop in alertness and short-term memory…”

Moving ahead, there is this best solution for you available to push you to drink.

Simply use thirst as a guide. Indeed, your own natural urge to drink water can save you from getting dehydrated. How much water you need to drink is a simple way to help ensure your individual needs are met or not, day by day.

Also, you can use the colour of your urine as a guide. If it is a deep, dark yellow then you are likely not drinking enough water. Fatigue, moodiness and headache can also indicate you need to drink more water.


Drinking pure water daily for healthier life is the only way. For sustenance, you may spend a whole day without eating anything but drinking water. This healthy life sustenance becomes vulnerable when you are not having pure and clean water for yourself. We will advise you to become smart as the new age contaminants are getting dangerous and advanced day by day. Equip yourself with water purifiers for having wellness of your family. There are lots of water purifier available in the market nowadays economical as well as equipt with smart technologies for purifying water.

You know, for your help I’ve also created a blog regarding four easy home remedies to purify water. And also, you can check out a blog if you want to know some secret benefits water does offer to your body.

Health benefits of drinking clean water

When drinking water the amount, however, is something you need to fine-tune based on your individual circumstances. Your body parts’ needs of water vary depending on your age, daily life activities, climate and other. But, you needn’t get bogged down with trying to figure out the exact amount your body needs or tracking how many glasses you’ve drunk in a day. If you learn to listen to your body, it will tell you when it’s time to replenish.


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