The human body is composed of many vital systems and each has a specific function to perform. But when colds strike and infections keep occurring, there is one system that you have to look closer at and that is the immune system. Composed mainly of groups of biological processes combined with an organism that fights and protects against illnesses and infections, this system functions by keeping the bad cells away. You can actually compare its function to a security guard in an establishment. Before any one can enter, the security guard checks the person and his/her belongings to make sure that he/she will not do harm inside. That's exactly what the immune system does. So, before bacteria and viruses can enter the body and cause harm, the immune system already acts in defense.

But just like any other systems in the body, the immune system may also fail, if not well maintained. Some people actually take this system for granted. They thought, with the exercise that they do everyday, it is enough to keep their body healthy. True to some extent, however it is important to note that keeping the immune system strong is as vital as keeping the other systems in proper function. So, to achieve this, you have to make sure that you feed your body with immune boosters.

Now, when you hear the words immune boosters, perhaps the first thing that comes to your mind is to take vitamin supplements, right? Well, although these are widely used these days, immune boosters may not always come in capsule or tablet form. In fact, it's even better if you go natural like eating those fruits and vegetables that are rich in antioxidants like Vitamins A, C, and E.

For Vitamin A, you can eat carrots and goji berries. These two are rich in red pigment that is commonly found in plants known as beta-carotene. For Vitamin C, well, you have lots of vegetables and fruits on the list there. Veggies like green cabbage, broccoli, tomato, cauliflower, gourd, and spring beans are rich sources of antioxidants. Same with fruits like grapefruit, Camu berry, guava, lemon, strawberry, raspberry, kiwi fruit, mango, and peach. And for Vitamin E, you have the nuts or almonds, green leafy vegetables, and vegetable oils.

However, aside from the ones listed above, there are other foods that are known to be rich in antioxidants. These very much include raw foods like acai, blue mangosteen, cacao butter, cacao nibs, and cacao powder. These help keep the immune system strong by making sure that free radicals, the leading causes of cell death, are eliminated from the body.

The immune system's function should not be ignored to keep your body healthy and strong at all times. Take note that regular exercise is not enough to do this, it should be combined with a healthy diet rich in immune boosters. If the list above is not enough, you can always do a thorough research about immune boosters or better yet read on David Wolfe's Sunfood Nutrition. David Wolfe, a world-renowned health and nutrition expert, believes that raw foods can certainly do a lot to keep the immune system strong.