Autoimmune diseases arise from an overactive immune response of the body against substances and tissues normally present in the body. In other words, the body actually attacks its own cells. The immune system mistakes some part of the body as a pathogen and attacks it. This may be restricted to certain organs (e.g. in chagas disease or involve a particular tissue in different places (e.g. Goodpasture's disease which may affect the basement membrane in both the lung and the kidney).
According to T. Colin Campbell in his book The China Study, chapter 9, one of the main cause for autoimmune diseases lies in our diet: Molecular mimicry between some animal and human proteins may cause the immune system (the white blood cells) to attack our own cells. In particular, Campbell mentions the inability of some persons' digestive system to fully break down cow's milk into amino acids. The remnants of these proteins are treated as foreign invader antigens by the immune system, which may then turn against other forms of closely similar proteins in our own body
Name
Accepted or Suspected
Ankylosing Spondylitis
Accepted
Chagas disease
Suspected
Chronic obstructive pulmonary disease
Suspected
Crohns Disease
Accepted
Dermatomyositis
Accepted
Diabetes mellitus type 1
Accepted
Endometriosis
Suspected
Goodpasture's syndrome
Accepted
Graves' disease
Accepted
Guillain-Barré syndrome Accepted
Hashimoto's disease
Accepted
Hidradenitis suppurativa
Suspected
Kawasaki disease
Suspected
IgA nephropathy
Suspected
Idiopathic thrombocytopenic purpura
Accepted
Interstitial cystitis
Suspected
Lupus erythematosus
Accepted
Mixed Connective Tissue Disease
Accepted
Morphea
Suspected
Multiple Sclerosis
Accepted
Myasthenia gravis
Accepted
Narcolepsy
Accepted
Neuromyotonia
Suspected
Pemphigus vulgaris
Accepted
Pernicious anaemia
Accepted
Psoriasis
Accepted
Psoriatic Arthritis
Accepted
Polymyositis
Accepted
Primary biliary cirrhosis
Accepted
Relapsing polychondritis
Accepted
Rheumatoid arthritis
Accepted
Sarcoidosis
Suspected
Schizophrenia
Suspected
Scleroderma
Suspected
Sjögren's syndrome
Accepted
Stiff person syndrome
Suspected
Temporal arteritis
Accepted
Ulcerative Colitis
Accepted
Vasculitis
Accepted
Vitiligo
Suspected
Wegener's granulomatosis
Accepted