Autoimmune diseases (ADs) is a condition in which immune system mistakenly attacks the body’s own tissues/cells. Over 80 types of ADs have been identified in humans and ADs can occur in any part of the body (see the left diagram below). The incidence of ADs is increasing rapidly worldwide in recent years due to the environmental changes. ADs are now the 4th largest cause of disability in women and the 8th leading cause of death for women between ages 15-64.