Orthorexia Nervosa is a recently discovered disease because it was thought to be Anorexia earlier on. This type of disorder is an obsession with eating only healthy types of foods. This disease usually occurs when people are so driven to become thin that they start to become obsessed with everything that they are consuming.

Someone who struggles with Orthorexia Nervosa will do things like planning out their meals for the next day. This means that they will have a strict planned schedule of breakfast, lunch and dinner. This person will try to be constantly limiting the amount of food that he/she is eating in order to maintain a certain weight. People who have Orthorexia Nervosa are often critical of what others eat, and usually isolate themselves from surroundings