I'd have to say that salt has always been in use. Besides needing sodium for our nervous system to function, we have an evolutionary yearning for it, like we do for fat. Foods that contain salt and fat taste better to us than those that don't. I don't know when it started being used for preservation (for drying food out), but this knowledge has existed since at least the ancient Egyptians were around (at least 3000 B.C.E.), as they used it in part to preserve their mummies.
use less salt in your diet.
no, it is only visible in the coca cola diet :)
A low cholesterol diet probably limits your use of salt as some things that are high in cholesterol usually have a high amount of salt in them and you would need to avoid these.
Yes
It is a partial yes. It is not poisonous so if you add salt to your dogs food it is fine but too much salt in a dogs diet can cause skin allergies and hair fall in dogs. So it is better to reduce the salt to 1/3rd or 1/4th the quantity that we humans use.
You would probably have to use salt water
salt and sunscreen
i think that we can use little salt in khichadi(porridge) while suffering from jaundice.
Anyone with high blood pressure or heart problems needs to watch salt in their diet.
A low salt diet means trying to cut salt out so try to buy the low sodium version of everything like low salt soups and use less marinating sauce to cut it out.
The same chemical compound: sodium chloride (NaCl); but salt in seas, oceans, lakes, mines is not as pure as table salt for humans use etc.
Not all recipes require salt. Some recipes use other spices in place of salt. Many recipes that include salt will turn out fine if you leave the salt out because of a low sodium diet.