Your immune system defends your body against bacteria, viruses, parasites and other bad visitors. Even when you’re sleeping, your immune system is working. Just as every organ, tissue and cell needs energy to work well, the cells and tissues that make up your immune system do also – and this comes from the food you eat and the supplements take. So, what you eat impacts how well your immune system works.
Here is good video to watch about the 10 best foods that can help.