How to Boost Your Immune System Naturally? What is Low Immunity? The immune system of your body commendably defends you against various diseases by killing the disease-causing agent. After coming in contact with an infectious agent one gets ill while other does not. This is due to the strong and weak immunity of the person respectively. Nowadays life is so fast that one cannot afford to slow down due to recurrent infections like cold, cough and flu. Recurrent infections are