Your immune system is a complex mechanism. It has to be potent and adaptive enough to fight a wide range of illnesses and infections, but it does not cause any allergies and other autoimmune disorders. Your immune system is carefully controlled by a multitude of inputs in order to work in such a delicate equilibrium. A good diet is essential for a healthy immune system. This involves getting lots of fruits, vegetables, legumes, whole grains, lean protein, and healthy fats into your diet. Moreover, there are various herbal supplements to boost immune system. Herbal supplements can play a part in immune system maintenance, in addition to giving your immune system the energy it requires.