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Urine

Adapted from Wikipedia · Explorer experience

A medieval chart showing how different urine colors were used to understand health in the past.

What Is Urine?

Urine is a special liquid that our bodies make. It helps us get rid of extra water and waste. This waste comes from our blood and includes things like urea, uric acid, and creatinine. Our bodies make urine in the kidneys. It then travels through tiny tubes called ureters to the urinary bladder. When we need to go, urine leaves our body through a tube called the urethra.

Why Urine Is Important

Urine helps keep our bodies healthy by cleaning out waste. It also helps the world outside our bodies. Urine can help plants grow because it has important nutrients. Some animals use urine to mark their space and let others know where they live.

Long ago, people used old or changed urine, called lant, for many things. They used it to clean homes, treat leather, and even color fabrics. Urine was also used to help make gunpowder, though we don’t use it for that today.

How Urine Looks And Feels

Urine is mostly water—about 91–96% of it. The rest has tiny bits of salts, urea, and other small pieces. The look and smell of urine can change. If you drink a lot of water, urine looks very light. If you don’t drink much, it looks darker. Some foods, like asparagus, can make urine smell stronger.

Helping Doctors And Farmers

Doctors sometimes look at urine to see how healthy a person is. They check its color, smell, and what’s inside to find problems. This helps them make sure our bodies are working well.

Urine can also help farmers. Because it has nutrients, it can be used as a fertilizer to help soil grow plants. This is good for the earth and helps us grow food.

Urine is a very useful liquid that helps both our bodies and the world around us!

Images

A scientific example showing pinkish urine caused by eating beetroots, a common and harmless effect.
A 17th-century painting showing a doctor examining a urine sample by candlelight, reflecting historical medical practices.
An ancient Welsh manuscript illustration showing medieval medical ideas about the human body and urine.
A colorful medieval manuscript page showing two teachers discussing the medical importance of urine, from an old medical book.

Related articles

This article is a child-friendly adaptation of the Wikipedia article on Urine, available under CC BY-SA 4.0.

Images from Wikimedia Commons. Tap any image to view credits and license.