The immune system consists of tissues, organs, cells and chemicals that work to protect your health. Protection from colds, flu, and other conditions is from immune system balance. Balance of the immune system means that each defense system needs proper nourishment in order to work properly to ward off harmful infections. The body needs the proper amounts of vitamins, minerals, herbs, antioxidants, amino acids, and other nutrients to function properly and provide protection to the body. Supplements and a healthy diet can provide optimal health and maintenance to the body's defenses.