The immune system is the body's most complex and delicately balanced infrastructure, your first line of defense. Good immunity is built over a period of time. When you make consistent efforts to build up your immune system your body responds in wellness, not illness. Pay close attention to your immune system if you have problems with the liver, diabetes, cholesterol, hormone disfunction, chronic stress, chronic insomnia because your immune system needs to be boosted or fortified. Your immune system struggles when you undergo any treatments like radiation, chemotherapy, long-term candida. If you work with pesticides or smog, smoke, untreated tap water, remember to fortify your immune system.