What a person eats may also affect the amount of water they need to drink. For example, a person who eats water-rich foods, such as fruits, juices, or vegetables, may not need to drink as much water as someone who has been eating grains, bread, and other dry foods.
The environmental conditions a person is in will also affect how much water their body uses. A person living in a very hot climate will sweat, causing them to lose more water. A person in a climate-controlled environment will not sweat so they will not use as much water. If a person who has diarrhea or is vomiting has no access to water, they will lose water much faster than someone without these issues.
Humans can only survive a short amount of time without water because the body needs it for almost every process, including:. The effects of dehydration come on quickly, especially in extremely hot conditions when a person sweats. Without water, the body cannot produce sweat.
This can lead to a dangerous increase in body temperature and put pressure on the fluid in the body, including the blood. If this leads to a drop in blood volume, less blood circulates in the body, causing a severe drop in blood pressure. This itself can lead to unconsciousness or death. Water helps the body remove the toxins from cells and excrete them through the urine and breath.
Without water, the body cannot do this efficiently, causing toxins to build up. A toxic buildup harms the kidneys, which process the removal of the toxins from the body. If the kidneys fail, the toxins build up even further, causing widespread organ failure and death. Though drinking pure water is the main way a person takes in fluids, other liquids, such as herbal teas, fruit juices, and broth, also aid hydration. Examples include fruits, berries, and greens. However, not all foods will help hydrate the body.
Very dry, salty foods, such as breaded products, salty chips, or other dry, packaged snacks, may make dehydration worse. Drinks containing alcohol or caffeine may dehydrate the body faster, as they cause excessive urination.
The symptoms of dehydration can appear quickly. If the body starts to lose water, it may send signals to the brain to trigger a response that the person will notice. Diane Bell. Chronicling life in and around the region. Charles T. Analysis on how identity intersects with civic life and daily news in San Diego.
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