Healthy Living

How Long Can We Live Without Drinking Water?

You are alive right now most likely because of water, the most esstential thing for human beings to survive. But when it comes down to it, why do we really need water to live? And how long can we survive without it?

First of all, 70 percent of our bodies are more or less made of water. That should give you a pretty good idea of why we need the “nectar of life” so much. But if you need a more detailed explanation, that’s because your body has lots of important jobs to do and it needs water to do most of them. For example, your blood contains water, and it’s this blood that carries oxygen to all of the cells in the body. Furthermore, your body uses water in all its cells, organs and tissues to maintain bodily functions, such as regulating the temperature.

Because of this, a person can only survive a few days without water. There are other factors that may come into play, of course, such as activity levels or the environment they are in, and dehydration works slightly differently for different people.

But as a general rule of thumb, a healthy human being can survive for weeks without food, but only three days without water. However, as previously mentioned, other factors may come into play. These factors are listed below.

  • Age
  • Sex
  • Overall health
  • Activity levels
  • Other bodily factors, like height and weight


What the person’s diet consists of may also be a factor, since fruits and vegetables have more water in them than bread and grains. There’s also the question of where the person lives. For example, a person living in dry weather may cause them to lose more water through sweating than a person living in a cold country.

Bottom line is we really can’t survive without water. It is important for us to drink as much as we can every day, especially if we live an active lifestyle. Dehydration is no laughing matter, and learning how to avoid it can help us become healthier. So drink up.