Answer:The medical term for not having enough water in your body to function correctly is dehydration. To stay healthy, your body requires a particular amount of water on a regular basis. This is due to the fact that water makes up 60% of your body weight. Water accounts for up to 75% of a child's body weight.
You can't go very long without water, but the actual period of time you can go without it varies. This is because a number of factors influence how much water your body uses, including:
•environmental circumstances
•age
•health
•weight
•level of activity
•consuming food
These elements influence how your body utilizes water. In a warmer area, for example, your body will sweat more, resulting in increased water intake. If you have a fever, are vomiting, or have diarrhea, your body will lose water more quickly. If you exercise, you'll also drink more water.
Furthermore, certain foods will contain more water than others. Other beverages, such as herbal tea and juice, are used alongside water. However, some beverages, such as those containing caffeine or alcohol, can cause dehydration.
In the Archiv Fur Kriminologie, one study was published. According to Trusted Source, you can't survive without food and water for more than 8 to 21 days. People on their deathbeds with low energy levels may only last a few days or weeks without food and water.
Water is far more important to your health than food. Hunger strikers who do not have access to food but do have access to water can live for several months or longer. According to one article in the British Medical JournalTrusted Source, persons on a hunger strike should consume 1.5 liters of water every day to keep their fluid levels in check. To substitute sodi, the article suggests adding a half teaspoon of salt to the water every day.
Source: healthline