Recently, researchers from McGill University found that sodium is an “on/off” switch for a major neurotransmitter receptor in the brain. This means that the amount of sodium in your body has a significant influence over diseases such as epilepsy and neuropathic pain.
Sodium is an essential nutrient in the body (in small amounts). In your body, sodium regulates water levels and draws water into the bloodstream, which can increase the volume of blood and as a result can increase your blood pressure. High blood pressure makes your heart work harder, and the increased force of the blood can hurt other organs like the kidneys, brain, and eyes.
Humans don’t need much sodium; according to the American Heart Association adults only need about 1,500 milligrams a day. However, most Americans actually consume 3,400 milligrams of sodium per day. Most of the sodium we consume is not actually from the salt we put onto our food; it is salt that is already in the packaged and processed foods that we buy. It’s important to read food labels and try to limit your sodium intake.
Eating more potassium each day can also help balance out your blood pressure and negate some of the harmful effects of too much sodium. Foods rich in potassium like bananas, beet greens, yogurt, potatoes, spinach, sweet potatoes, tomatoes, and white beans can help increase your potassium intake and fight high blood pressure.