"Sometimes you have to eat pizza or a hamburger. All food is good food." The key: moderation. Our experts have three things you should know regarding eating disorders. First, healthy eating is not always about counting calories or the food pyramid. It's all about eating in moderation. Second, purging behavior is not just self-induced vomiting. It could also be excessive exercising, or diet pills and laxative abuse. Third, we discuss co-morbid conditions. 90% of eating disorders are diagnosed with something else. In other words, there could be trauma, depression or anxiety leading to an eating disorder.