What nutrients are lost during prcessing?

During food processing, several nutrients can be lost, particularly water-soluble vitamins like vitamin C and the B vitamins, which can be diminished through heat, light, and exposure to air. Minerals may also be lost, especially if foods are boiled and the cooking water is discarded. Additionally, fiber content may decrease in refined grains and processed foods. Overall, the extent of nutrient loss varies depending on the processing method used.