Human are about 60 percent water. We should drink about eight 8-ounce glasses of water a day. So why can’t we drink water directly from the sea? That water should be the same as drinking from a fresh water lake, right? Wrong. Drinking seawater is highly dangerous to humans. It contains large amounts of sodium, which make it dangerous to drink.
Too much sodium in your body actually doesn’t allow it to work properly. High sodium levels lead the body to state of dehydration. In the case of the stranded sailors, drinking the seawater will only endanger their health. As sodium levels increase in the body major organs, especially the kidneys, fail to work properly. The sailors will start feeling thirstier, dry in the mouth, and won’t need to go to the bathroom as much. Severe dehydration can lead to death.
You may think all is lost for these stranded sailors. If they have the knowledge and equipment, they can actually separate the sodium from the water using evaporation. By doing this procedure, they can safely drink the water without concern for the sodium levels. While water is one of the most important necessitates to the body, you need to be cautious about what is in it.
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