Solid oranges include fibre, carotenoids, flavonoids, and Vitamin A, all of which have been linked to antioxidant activity and immune system support.
Citrus fruits rich in ascorbate, such as lemons and limes, benefit the immune system in the same way as oranges do.
It appears to have antibacterial and antiviral activities, which are often connected with the presence of allicin, a sulfur containing chemical that the garlic plant uses as a natural insecticide.
Blueberries are rich in hesperidin which protects you from many types of infections.
Broccoli, for example, is high in Vitamin C and may have antibacterial and antioxidant properties that assist the body fight illness.
They, like citrus fruits, are a great source of Vitamin C and can help keep the immune system strong.
Curries are rich in Vitamin A and beta carotene is also found in abundance in it.
There is some evidence to suggest that the many different types of ginger might be beneficial to one's immune system.
Apples are rich in ascorbic acid and flavonoids and they are essential for boosting your immune system.
Green tea can cause you to have a good sleep and it also removes your stress.