Sulfites have been used for more than two thousand years, mostly as a preservative in both drinks and food. They are also used to sanitize fruit, such as wine grapes or food found in salad bars. Sulfites can bleach foods as well, as with potatoes and corn. About 1 in 100 people have sensitivities to sulfites. And among these people, about five percent are clinically allergic to sulfites. As a result, the FDA has even required a sulfite warning to be placed on wine bottles containing sulfites. How... more