Salt is, believe it or not, salty and cool in nature. Salt helps regulates the kidney functioning. Salt is a vital component for the human body, but should be taken in smaller amounts by people with hypertension, oedema and nephritis. Salt can help prevent a sore throat if gargled with warm water. Salt can help the body retain water, and if their is not enough salt in the diet it can lead to lack of energy, problems with urination.
Externally salt can be used to clean wounds on the skin and cleaning generally. Salt can help stimulate the appetite. Best way to get enough salt in the diet is to cook with it, but best not to add it to a meal after cooking.