You think you're safe eating those "healthy" frozen entrees? Well, think again. They're loaded with the silent killer, better known as sodium. Many people are so consumed by the fat and calorie content of foods that they overlook the sodium content. {relatedarticles}The problem with sodium is that it is hidden is so many foods, even those sweet treats you wouldn't think had any salt. Sure, the body needs sodium -- it helps maintain the proper balance of fluids, assists in transmitting nerve impulses and influences the movements of muscles. But there's also a dark side to this staple. It's a proven fact that sodium contributes to high blood pressure, heart disease, fluid retention and other health ailments. As it so happens, most of the sodium in our diets comes from table salt.