Psychological Causes that Lead to Bulimia

For my research project I am looking into why people develope the eating disorder bulimia. I choose to do this because i'm intrested in psychology and a close friend of mine actually suffered from bulimia. I am doing this research to further understand why an individal developes bulimia and what causes contribute to the disorder. My audience and the research its intented for is for people suffering from the disorder to maybe relate and hopefully help find out what causes the disorder. With my work i hope to accomplish a better understanding of the disorder and hopefully develope other concepts on how it's formed.