Why do some people get autoimmune disease?
The people who get autoimmune diseases have immune systems that overreact to environmental toxins and may be suffering from immune deficiency (IgG sub class deficiency). They may have developed autoantibodies,( antibodies against self). Not all the people with autoantibodies get autoimmune disease. Due to injury their protected proteins may get exposed to their immune system which starts producing autoantibodies.
