There are multiple reasons someone may develop anorexia. Sometimes it is because of stress or anxiety. Most commonly, it is the constant need to feel as if they weight too much and need to remain slim.
Anorexia can be caused by body dysmorphia, which is where someone will see themselves as more overweight that they really are. Anorexia can also be caused by bullying, or stress.
Examples of biological factors include:
Irregular hormone functions Genetics (the tie between eating disorders and one’s genes is still being heavily researched, but we know that genetics is a part of the story). Nutritional deficiencies
