Unrefined sea salt is healthy. The blood-pressure-raising effect of table salt can be due to its high content of sodium with not enough magnesium to balance it. This has a magnesium-lowering effect that can constrict the arteries and raise blood pressure. Real salt (of various kinds) contains plenty of magnesium and other important minerals, which is why it usually does not affect blood pressure in a negative way.
Sodium is an essential nutrient required by the body for maintaining levels of fluids and for providing channels for nerve signaling. Some sodium is needed in your body to regulate fluids and blood pressure, and to keep muscles and nerves running smoothly.
Without appropriate amounts of sodium, your body may have a difficult time cooling down after intense exercise or activity. When the body is hot, you sweat. If you do not have enough sodium, your body may not sweat as much and you may then become overheated. This could result in a stroke or exhaustion as well as dehydration.
Sodium is an energy carrier. It is also responsible for sending messages from the brain to muscles through the nervous system so that muscles move on command. When you want to move your arm or contract any muscle in your body, your brain sends a message to a sodium molecule