Anorexia. I can't feel hungry. What's going on?

Anorexia, do not feel hungry, is likely to be caused by indigestion, and diet structure unreasonable, insufficient activity and other factors. In addition, also need to consider is gastritis, gastric ulcer, gastrointestinal dysfunction and other diseases. If the female appears above performance, may also be pregnant, can be diagnosed by blood HCG test.