Chronic Dehydration

Chronic dehydration affects everyone who does not drink enough fluids.

Dehydration Effects

The effects of dehydration and diseases caused by dehydration.

Dehydration Facts

Dehydration definition, its causes and mechanism. How alcohol causes dehydration.

Dehydration In Children

Symptoms of dehydration in children. When you should call the doctor.

Dehydration Symptoms

All dehydration symptoms and signs. Severe symptoms of dehydration.

Home » Dehydration Effects

The effects of dehydration

The effects of dehydration

1% dehydration leads to thirst.

2% dehydration causes feeling of anxiety, reduced appetite and capacity for work by 20%.

4% dehydration brings feeling of nausea, dizziness, emotional instability, fatigue.

6% dehydration leads to loss of coordination and coherence of speech.

10% dehydration causes thermoregulation failure in addition to all above mentioned symptoms. Cells begin to die.

At 11% dehydration it’s not enough just to drink water. The chemical balance of the organism has undergone serious changes. In order to restore it you need professional medical care.

20% dehydration may lead to death.


  • Kay clark said:

    My daughter has been ill 4 years with her heart and low blood pressure. She saw the heart man today and after many tests, they now say she is dehydrated and needs to take more salt. I feel she is being fobbed off yet again and nothing is being done for her after four years of misery. Is this possibly right and she can be this ill with dehydration.

  • Sarah said:

    Salt takes water away from the body. If she is dehydrated, she does not need to be taking in more salt unless she takes in more water as well. I suggest that you get a second opinion from another doctor, if you aren’t sure of what he/she is saying. Salt does raise the blood pressure, that is why they tell you that, if you have high blood pressure, do not take in a lot of salt. Just make sure that your daughter drinks at least 6-8 glasses (1.5 – 2 liters) a day, drunk regularly throughout the day. Ensure that plenty of water is drank before, during, and after exercise, especially in warm weather. Good luck to you. 🙂 If you have any more questions, email me at

  • John said:

    Sarah, your statement about salt is incorrect. Here is a paragraph from this site that says otherwise – “Dehydrated body needs the water but it can refill it successfully only if there is enough salt in the body. Salt keeps the water in the body and normalizes the composition of the blood and intercellular fluid. When there is no salt enough, the water is removed from the body to keep salt concentration constant. After the sells received enough water they are not dehydrated any more, so the disorders caused by the dehydration can gradually disappear.”

    Also, if you search around, you will find that salt is used in helping out in dehydration for not only humans but for many animals. Back in the “old west”, riders use to give their horses salt before going through the desert to help with dehydration. It is true that salt can increase your blood pressure but there are several other factors that will contribute to that as well.

  • Ashley said:

    That’s why horses have salt licks, especially in the summer, so they stay hydrated.

  • Marcy said:

    I have been sick for a couple years now. I always feel nausious and vomit at least 4 times a week. Im constantly bloated and have abdominal pains. I dont drink alot of water, i dont drink alot or anything really because it make me feel full and i get sick.

    For the past 3 weeks i have been nausious, dizzy, vomiting diahrea and have have severe stomach pains. I went to emerg and they didnt know what was wrong with me. Im wondering if this could be because i am dehydrated???

  • Michelle said:

    May I suggest a fabulous book: The UltraMind Solution by Mark Hyman.

  • anna said:

    Hi, this information is life changing.

    All my life I’ve never been thirsty or intrested in drinking anything, and my mum used to try to force drinks on me when I was a kid.

    As I got older I started with mystery illness, fatigue, IBS, ME, low blood pressure, breathing problems, panic attacks….all silly things that where ruining my life.

    Then a specialist told me to drink 3 litres a day, which made me vomit! However, it’s hard to do, but I stuck with it and had a dramatic improvement.

    Then slipped back to old habits, I’ve just read this and realised why feeling ill again!

    Thanks for the great info….drink more

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