How zinc helps you fight off infections
Diana Kwon writes: Walk down the cold-remedy aisle of almost any pharmacy and you’ll see a shelf full of zinc supplements. Clearly, people must be worried that they’re not getting enough zinc, a nutrient often touted for its ability to quash the common cold and other respiratory illnesses. But do many of us really need more zinc? And if so, what good does it do? As researchers learn more about how our bodies use zinc, they’re finding that the element…