#10. Vitamin C
Since this vitamin is the greatest supporter and promoter of an efficient immune system, it is not important from where you get it, as long as it is present in your diet. The best way to do it is to consume foods with a significant content of vitamin C. Citrus fruits of all kinds, berries, apples, and many more fresh fruits and vegetables contain this great substance. So make sure you enjoy plenty of them, especially since autumn is slowly approaching.