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​Outdoor Safety
The more you know, the safer you are.

Should you drink your pee to survive?

4/15/2016

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Drinking pee to survive is a bad idea. But Bear Grylls does it, so why can’t you?

Bear Grylls is a reality TV star - meaning it is not an accurate reflection of reality at all! Sure, drinking urine for a well hydrated individual in a non-survival scenario is probably fine. Gross, but fine. However, things change in a survival situation. And Bear Grylls’ body is not taxed like it would be in a real (not reality TV) survival situation.  

First, what is urine? Urine is filtered waste from the kidneys. Other than water, it usually contains salts and other compounds like proteins, hormones, ammonia, formaldehyde, and other metabolic waste products. If the kidneys cannot filter this waste, our bodily systems shift out the norm, leading to terrible consequences, even death.

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In the case of dehydration, the kidneys will retain as much water as possible for the body. This is one reason why urine will become dark and concentrated with toxins. Drinking urine only re-introduces these waste products to the body and will apply unnecessary stress to your kidneys. It’s like you throwing out your smelly garbage, only for it to be returned to your door step. 

The high concentration of salts in your urine will further dehydrate you. It might induce vomiting as well. Vomiting and diarrhea is a route of rapid fluid loss. This would make things a whole lot worse. With all this in mind, it is not surprising that the Wilderness Medical Society, the U.S. Army, and many others do not support Bear Grylls’ suggestion of drinking urine to survive. 

As a side note, water will not be absorbed from your urinary bladder itself. You do not have to avoid urination, let it flow. Recent research suggests that urine may not be as sterile as previously thought. And if it is, it’s only sterile in the bladder. Once it passes through the urethra and genitals, is it no longer sterile.

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But what should you do? Prevention and knowledge are your best friends in this situation. Urine can be useful in solar stills. Filtering, boiling, or adding drink mixes will not help transform urine into something that is safe to drink. Take a desert survival class to learn how to procure water in dry environments. One great resource is the Army Field Manual for Survival. 

On the opposite end, it is possible to drink too much water. Read about that in about that here.
What are your thoughts? Please leave a comment below.

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