Updated Mar 11, 2021 | 13:40 IST The immune system plays a vital role in our human body. It keeps track of every virus it has ever defeated and does not let the same enter the body again. It protects our body against all diseases. Avoiding infections as seasons change: 10 effective ways to boost your immunity| Photo Credits: Pixabay Key Highlights It defends your body against foreign substances and keeps you healthy Here are a few quick ways in which you can protect your immunity New Delhi: Our immune system is composed of special cells that defend the body against infection. It does not let any foreign substance invade the body and cause any sort of harm. Our immune system is responsible for the proper functioning of our body. You must take care of your immunity to avoid any serious risk or damage to your health. Our immune system is very essential for our survival. If our immune system is weak, our body gets prone to infections and viruses. The immune system is spread through our body and consists of various cells, tissues, organs and protein. Our immunity is an entire system and to function well it needs a lot of balance and hard work. Our dietary habits and lifestyle affect the immune system directly. Factors like your age and mental health also have an impact on your immune system.