There are more than 100 diseases that fit into the category of autoimmune disease, and about 75 percent of the 50 million people living with autoimmune disease are women. Additionally, about 40 million women a year in the United States use birth control methods. But how does your birth control impact your autoimmune disease risk? Some birth control may put you at greater risk of certain conditions, while others may be protective. Read on to learn more.