Kim
If your girlfriend gets defensive whenever you bring the subject up. If she constantly talks about food, calories, fatty foods, being fat, etc. She could be anorexic. When she eats does she play with her food alot,push it around her plate. Is she afraid of certain foods? Does she look real thin? These are all indicators. She has to want help or realize a problem. What about telling her parents or a best friend. Sometimes they might be able to get through to her, especially another female. It's hard for woman to talk about things like this with guys. Good Luck