&quote;People Power&quote; Health Superbook: Book 10. Immune System Diseases

Very simply, all the cells in the bodily organism have a special marker in them which the immune system knows are its own but everything else in the body without this special marker is considered a foreign agent, an enemy which the immune system tries to destroy in order to win this war against toxins and continue to thrive. When the immune system senses large amounts of foreign invaders, it triggers an immune response by producing antibodies which go out, fight these invaders (antigens) and try to destroy them all. When the body's immune system is weak, it gets confused and sometimes attacks its own healthy body cells because it thinks these cells are foreign invading toxic cells so the body's immune system is destroying itself. There are a lot of diseases like this like chronic inflammation, chronic fatigue syndrome, lupus, alopecia areata, ankylosing spondylitis, antiphospholipid antibody syndrome, autoimmune skin disorders, Cushing's syndrome, scleroderma, Sjogren's syndrome, etc.