About 50 million Americans suffer from autoimmune diseases that cause abnormal over-activation, or under-activation, of the immune system.
In cases of over-activation, the immune system produces antibodies in response to an unknown trigger that attacks the body’s own tissues and organs. This can include the heart, brain, muscles, digestive tract, skin, eyes, joints, nerves, and lungs. In cases of under-activation, the immune system experiences difficulty in fighting off infections.
Some of the most common autoimmune diseases include psoriasis, which affects the skin; Crohn’s disease, which affects the digestive system; and multiple sclerosis, which affects