Sodium

Necessary for electrolyte balance; for regulating blood pressure, volume, and pH; for controlling the movement of fluids across cell membranes; and for neuron function. Along with any food doused in table salt or cured in salt, such as olives and some meats, natural sources of sodium include seaweed, celery, turnips, artichokes, and some leafy green vegetables, such as spinach and collard greens. Too much sodium isn’t a good thing, so it’s preferable to get your sodium from whole food sources and conservative use of unrefined sea salt.