How is sodium bisulfite used in food preservation and what are its potential health effects?

Sodium bisulfite is used in food preservation as a preservative and antioxidant to prevent spoilage and maintain freshness. It can also be used to inhibit the growth of bacteria and mold in food products. However, some people may be sensitive or allergic to sodium bisulfite, which can lead to adverse health effects such as Asthma symptoms, skin reactions, and digestive issues. It is important for individuals with sensitivities to sodium bisulfite to read food labels carefully and avoid products containing this ingredient.