It cushions the brain, spinal cord, and other sensitive tissues

Dehydration can affect brain structure and function. It is also involved in the production of hormones and neurotransmitters. Prolonged dehydration can lead to problems with thinking and reasoning.

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Cartilage, found in joints and the disks of the spine, contains around 80 percent water. Long-term dehydration can reduce the joints’ shock-absorbing ability, leading to joint pain.

Blood is more than 90 percent water, and blood carries oxygen to different parts of the body.

The kidneys regulate fluid in the body. Insufficient water can lead to kidney stones and other problems.

Up to 65% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%. 

A lack of water can cause blood to become thicker, increasing blood pressure.

The bowel needs water to work properly. Dehydration can lead to digestive problems, constipation, and an overly acidic stomach. This increases the risk of heartburn and stomach ulcers.

With dehydration, the skin can become more vulnerable to skin disorders and premature wrinkling.

These dissolve in water, which makes it possible for them to reach different parts of the body.

Water is needed in the processes of sweating and removal of urine and feces.

When partying, unsweetened soda water with ice and lemon alternated with alcoholic drinks can help prevent overconsumption of alcohol.

When dehydrated, airways are restricted by the body in an effort to minimize water loss. This can make asthma and allergies worse.

Water may also help with weight loss, if it is consumed instead of sweetened juices and sodas. “Preloading” with water before meals can help prevent overeating by creating a sense of fullness.

The middle layers of the skin and the stored water in these work like a radiator for the body. When the body temperature rises, the water accumulate the heat and starts to evaporate, cooling the body. 

Saliva helps us digest our food and keeps the mouth, nose, and eyes moist. This prevents friction and damage. Drinking water also keeps the mouth clean. Consumed instead of sweetened beverages, it can also reduce tooth decay.

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1. Healthier digestion

Drinking hot water helps to break down food faster than drinking cold or warm water. It reduces the risk of constipation by supporting regular bowel movements.

Water Intake and Water intoxication
  • Drinking when you are thirsty maintains your body's water level within about 1-2% of its ideal state. But as we get older, our sense of thirst can get fuzzier and that is when dehydration can become a threat.
  • Water intoxication occurs when the amount of electrolytes in the body becomes imbalanced by excessive water intake, disrupting brain function. It happens when you drink more than you can pee.
Is it possible to drink too much water?

In short, yes: There is such a thing as drinking too much water.

  • Kidneys can excrete up to 28 liters of fluid in a day, but only one liter an hour. Drinking more than this can lead to water intoxication and electrolyte imbalances.
  • Doing so can dilute the sodium in their bodies, resulting in a condition called hyponatremia (this happens mostly to athletes).

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