Almonds are a great source of vitamin E. By scavenging free radicals, which can harm cells, this potent antioxidant is essential for a robust immune system.

Quercetin is a flavonoid in apple skin that helps the immune system and reduces inflammation. Apples contain phytochemicals that can help protect from colds.

Anthocyanin, a type of flavonoid found in blueberries, has antioxidant properties that strengthen the immune system. Flavonoids also boost respiratory system's defense.

Broccoli is a great source of Vitamin A, C, and E. It also contains powerful phytochemicals that can strengthen the immune system.

Theobromine, an antioxidant found in dark chocolate, may strengthen the immune system by protecting the body's cells from free radicals.

Allicin, a compound found in garlic, strengthens the immune system's capacity to combat colds and flu. Garlic is antiviral and antimicrobial which may help prevent infections.

Ginger's anti-inflammatory qualities soothe sore throats, coughs, and other inflammatory disorders. Ginger helps suppress bacterial growth and fights infections.

Kiwis contain folate, potassium, vitamin K, and vitamin C. The white blood cells are strengthened by vitamin C to fight illness, while the other minerals in kiwis keep the rest of your body healthy.

Limes are rich in vitamin C, which strengthens the immune system. White blood cell formation, which is essential for battling infections, is thought to be increased by vitamin C.

Mushrooms contain selenium, B2 and B3. You can get a more severe case of the flu if your selenium levels are low. B2 and B3 both contribute to a strong immune system.

Oranges are a great source of vitamin C, which may shorten the duration of cold symptoms and enhance immune system function.

Red Capsicum is high in vitamin C and a rich source of beta-carotene. Both boost your immune systems response to microbes, have anti-inflammatory effects and support mucous membranes.

Spinach's antioxidants and beta carotene may boost the immune system's infection-fighting ability.

Sunflower seeds contain selenium and Vitamin E. Vitamin E strengthens the immune system by scavenging free radicals. Selenium has the potential to fight viral infections.

Lycopene found in tomatoes  helps reduce inflammation. The antioxidant also improves the capacity of the immune system to fend against cold and flu viruses.