Why Seawater Is a Problem for the Body:
1. Too Salty for Our Kidneys
- Seawater has about 3.5% salt.
- Our kidneys can only produce urine that's less salty than seawater.
- So if you drink seawater, your body has to use more water to flush out the salt than you gain from the seawater itself.
In short: You dehydrate faster by drinking seawater.
2. What Happens if You Drink It?
- Increased thirst
- Dehydration
- Nausea and vomiting
- Kidney stress or failure
- Delirium, seizures, and eventually death (if consumed in large amounts)
Can Seawater Be Made Drinkable?
- Yes — but only through desalination, which removes the salt using:
- Distillation (boiling and condensing water)
- Reverse osmosis (forcing water through salt-removing membranes)
- These methods are used in areas with limited freshwater (e.g., the Middle East), but they’re expensive and energy-intensive.
Bottled Seawater?
- If you're referring to bottled water that comes from the sea — it's not the same as actual seawater.
- Some brands filter and desalinate seawater before bottling it.
- Others just use seawater for minerals, diluting it and removing most of the salt.
- Always check the label: you should never drink raw seawater, even if bottled.
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