The two most common eating disorders, bulimia and anorexia, are commonly addressed, but what is the underlying cause of these dangerous diseases? I haven't seen a clear answer yet, or maybe it just hasn't been satisfying to me. The book says that bulimia is influenced by genetic factors, but also majority is from sociocultural expectations. I want to know what genes cause these diseases, is it a common mutation, or is it just passed down? Anorexia is one of the most life-threatening psychological conditions (Lilienfeld). I had at least 4 girls in high school in my larger group of friends that all became anorexic the summer prior to senior year. Two of them so severe that they were thankfully taken to treatment, but the other two were not for whatever reason. One that went to treatment a year ago is still struggling and does not look an inch bigger than when she was admitted to the rehabilitation center. She is no longer attending rehab, but i fear that she should be. Of all the 4 girls, one of them is doing better and gaining back weight in a positive way. I don't understand, I've heard it's difficult to gain back that weight, so is it a slow process and maybe that's why only one of the girls looks better? It's something that has always worried me and I'd be very interested to know the process of rehab for these diseases. Here is an example to show that it can truly be a disease that kills, so sad but very real.