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There is a natural tendency for a substance to move from a region of high concentration to a region of low concentration (see osmosis). This means that even water moves from its region of abundance to its region of shortage. Since salt water is more concentrated (less water) than the contents in your mouth (including any germs in there), when you gargle with it, it tends to draw water out of bacterial cells (which have more water in them). All cells are over 70% water and require water to function effectively and hence survive. If the salt water is concentrated enough, it will kill most germs in the mouth and some from the throat.

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Q: What are the benefits of gargling with salt water?
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Related questions

Will gargling salt water kill infection?

Gargling salt water will not kill or get rid of an infection. It will reduce the symptoms and pain of the infection though and will most likely be recommended by your doctor.


Does salt take away tooth infections?

Gargling with salt water can slow the spread of mouth infections.


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Try gargling salt water or go to your doctor.


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Don't bite or play with it. Try gargling with salt water to get rid of it.


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Try gargling salt water or go to your doctor


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Slippery Elm lozenges, also gargling with warm salt water.


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It depends on what you are gargling and the cause for the sore throat. Most sore throats are a result of bacterial or viral infection, and gargling frequently with a salt water solution can be very beneficial.


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gargling warm salt water (this is what i learned from a friends garandmother)


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Can you use salt water on tongue piercing?

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