During food processing, common nutrients that are typically lost include fiber, vitamins (especially B vitamins and vitamin C), and certain minerals. Processes like refining grains can strip away valuable nutrients, leading to a less nutrient-dense product. The removal of the bran and germ components during grain processing significantly reduces fiber and micronutrient content. It is essential to focus on whole foods to maintain nutrient levels, as consuming unprocessed or minimally processed foods receives the benefits of these vital nutrients that play critical roles in health.