Whats better to lose weight, anorexia or bulimia?

Both: Are actually related to biochemical changes in brain. They are both potentially lethal so you would not want either.

Both are significant problems. Please have a complete physical exam to know if you have a physical illness. Then see a clinical psychologist with expertise in multiple types of psychotherapy for help coping and a Psychiatrist for medication. A support group can be helpful.

Neither method is healthy or considered normal. Seek a professional weight loss program and have confidence in yourself to follow the protocol and you will lose weight and feel food about yourself.