What Causes Loss of Appetite?

Loss of appetite refers to a decreased desire to eat—ranging from reduced interest in food to complete aversion or anorexia. Multiple factors can cause loss of appetite, and common symptoms associated with indigestion include the following:

First, excessive fatigue: Overwork can lead to loss of appetite. Due to high work-related stress, many individuals bear heavy physical or mental burdens, resulting in fatigue or psychological tension, which may temporarily suppress appetite—a relatively mild condition.

Second, anorexia nervosa: Individuals who obsessively monitor their weight, fear weight gain, avoid eating, experience significant unintentional weight loss, and deliberately restrict food intake may gradually develop loss of appetite; in severe cases, this can progress to clinical anorexia nervosa.

Third, physiological changes during specific life stages: For example, women may experience loss of appetite during early pregnancy, menstruation, or while taking oral contraceptives. Symptoms typically resolve spontaneously once these periods end.

Fourth, pathological causes: Certain gastrointestinal disorders—including gastritis, enteritis, and even malignancies—as well as hepatic diseases, can also trigger loss of appetite. Such underlying medical conditions pose serious health risks; untreated loss of appetite not only compromises overall health but may also lead to malnutrition and exacerbate disease progression.

Therefore, when loss of appetite occurs, it is essential to promptly identify and address its underlying cause through appropriate diagnostic evaluation and targeted treatment to prevent disease progression or complications.