From the satisfying sound of that sizzle when a steak hits the grates, to the unique taste that only grilled food can claim, firing up the backyard BBQ and enjoying something grilled can make anyone's mouth water. There aren't too many things that are more pleasing as having a freshly grilled hot dog on a warm summer day or enjoying cooked fish with perfectly lined-up char marks. But is there a downside to enjoying this summertime staple too frequently?