How Long Can A Person Go Without Water (And Why)?

Exact Answer: Three To Four Days

Water known to have two hydrogen atoms attached to solitary oxygen in its molecular formula is a chemical substance that is transparent, inorganic, odorless, tasteless, and colorless. Approximately seventy percent of the earth’s total surface area is covered with water. It contains no organic nutrients or calories but is the primary reason for all of life.

The state of liquid is water, but when subjected to heat, it changes into water vapor and, when cooled, transforms into solid in the form of ice. Water is mainly present in seas and rivers on the earth and small proportions as groundwater.

How Long Can A Person Go Without Water
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How Long Can A Person Go Without Water?

Medical experts have found out that approximately sixty percent of the human’s body consists of water, with the bones comprising of thirty-one percent, kidneys and muscles around seventy-nine percent, skin approximately sixty-four percent, lungs nearly eighty-three percent, and the heart and the brain comprising of seventy-three percent of water. This signifies water’s importance and why the scheduled water intake is crucial for our body’s functioning. Apart from the consumption of water, it is also used widely for agricultural purposes.

Water is also known to be an excellent solvent, and it is also widely used in different industries. Water is also used in cooking food, and it is also used for various domestic purposes such as washing clothes and utensils. Apart from this, water is also required to play multiple sports such as water polo and swimming. All these facts are enough to understand the importance of water, and it can be said that without water, life wouldn’t have existed. Not only humans and animals but plants also need water to survive.

Type Of Living OrganismMaximum Days Without Water
Humans or animalsThree to four days
PlantsTwo to three weeks

It is crucial to take water regularly; otherwise, the living being can die. It has been observed that a human or an animal survives for a maximum of four days without water. However, there are a few exceptions, such as camels that can survive for up to two weeks without water. Plants are observed to last without water for approximately three weeks.

Why Can A Person Go Without Water For That Long?

A person can’t survive without water for more than four days because water is responsible properly for the body’s organs. Water helps regulate the body temperature and keeps the tissues of the eyes, mouth, and nose moisturized. It is also responsible for carrying oxygen and various other nutrients to the cells of the body. It also helps in lubricating the joints of the body.

Water also reduces the liver and kidneys burden by flushing out all the waste products present in them. It is also crucial for dissolving all the nutrients and minerals so that the body can easily access them. However, the water that is of no use for the body is removed by sweat, urine, breath, and bowel movements. It is vital to replenish the water supply of the body with foods and beverages that contain water.

It is advised that women must take a minimum of 11.5 cups of water every day. At the same time, men require 15.5 cups of water daily. By consuming the necessary amount of water daily, the overall health of an individual is improved. Water also helps in the digestion of food and smoothes all the metabolic processes in the body. An adequate amount of water intake is also required for keeping the cardiovascular system healthy. Loss of water leads to dehydration, and as a result, the body may not function properly.

Conclusion

Finally, it can be concluded that water is the most critical constituent of a human being’s life. Primary sources of water are seas and rivers. Water makes up sixty percent of a healthy person’s body. Women and men should take 11.5 and 15.5 cups of water daily, respectively.

On average, a human being wouldn’t last for more than four days without water. Loss of water in the body will disrupt the body’s various organs and cease blood flow. Essential nutrients and oxygen can’t be transported to multiple organs if there is a shortage in the body’s water supply.

References

  1. https://academic.oup.com/nutritionreviews/article-abstract/63/suppl_1/S6/1927737
  2. https://link.springer.com/article/10.1007/s11214-018-0476-7

Last Updated : 23 February, 2024

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21 thoughts on “How Long Can A Person Go Without Water (And Why)?”

  1. I think it’s really important to highlight how crucial water intake is for overall health. The article did a really good job.

  2. Avatar of Courtney Davis
    Courtney Davis

    This article was very well written and informative. I never thought about how important water is in our bodies and what happens when we don’t drink enough.

    1. Yes, the article was very informative. I never realized how integral water is in our body’s functioning. It’s a good reminder to stay hydrated.

  3. I’m skeptical of the claim that the body can last only 3-4 days without water. I would have appreciated a little deeper dive into that.

    1. I’m not sure it’s overstating. Think about all the functions water is involved in within the body.

  4. While I found this article interesting, it fails to address how much water is too much – overhydration can be a concern as well.

    1. I think the article could definitely have provided more information on overhydration. Thanks for bringing that up, Mary.

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