By the way, there are quite a few autoimmune diseases[1] where the body attacks parts of it. Some examples: psoriasis (affects the skin), celiac disease (small

By the way, there are quite a few autoimmune diseases[1] where the body attacks parts of it. Some examples: psoriasis (affects the skin), celiac disease (small intestine), rheumatoid arthritis (joints), multiple scleroris (nerves), Hashimoto's thyroiditis. [1] http://en.wikipedia.org/wiki/Autoimmune_disease#Classification http://en.wikipedia.org/wiki/Autoimmune_disease#Classificati...