What are the best foods to boost your immune system?

Foods that consistently support immune function include citrus fruits like oranges and grapefruits, which are high in vitamin C, as well as red bell peppers, which actually contain even more vitamin C than citrus. Garlic has well-documented antimicrobial properties, and ginger helps reduce inflammation. Leafy greens like spinach provide vitamins C, E, and antioxidants. Yogurt and fermented foods like kefir support gut health, which is closely tied to immune function. Nuts and seeds, particularly almonds and sunflower seeds, deliver vitamin E. Fatty fish like salmon provides vitamin D and omega-3s. Turmeric and green tea also offer anti-inflammatory compounds. Eating a varied, whole-food diet matters more than focusing on any single item.