If your immune system is strong, you won't get sick easily. To increase immunity, there are various simple ways that can be done. One way is to live a healthy lifestyle and diet. The immune system or immune system consists of a collection of cells, tissues, and organs that work together to protect the body from viruses, bacteria, fungi, and parasites. When the immune system is weak, these germs can easily enter the body and cause infection. Variety of foods to strengthen the immune system Healthy foods that are highly nutritious can help improve the performance of the immune system to stay strong in dispelling infections. Some types of foods that can strengthen the immune system are: 1. Broccoli Broccoli contains lots of fiber and antioxidants, and is rich in vitamins A, C, and E. This nutritional content makes broccoli able to maintain and enhance the immune system. 2. Spinach The content of antioxidants in spinach is no less high than broccoli. These vegetables also con