Another sign of adverse affects of this lack of eating on your body would be if you are always cold and/or have blue lips and fingernails. This is a sign of muscle deterioration from not consuming sufficient food. One's heart starts to consume itself, leading to poor circulation and, in some cases, death. I encourage you to look into this. If you suffer from the cold, ask for an EKG. Lots of people with anorexia have an extremely low heart rate.
I wish you the best.