salt as a first aid and as a cleansing agent

If got injured in your tongue until u get non-stop bleeding, please don't panic. just put a little salt onto your tongue's wound. don't worry, it's won't get hurt. And it's works to stop your tongue bleeding. I share this tips here because i've face these situation at last week and my mom gave me that tips.

Do you believe that salt could be used as a poison cleanser agent? do you know that a vegetable and fruit that we buy at market or supermarket contain a poison to protect the vegetable and fruit? And that's be sure will harm our health. Let's me show you about about this tips.
Before cook it, soak it with a salt water around 5 minute and then wash it.