What Is Loss of Appetite?

Loss of appetite is a reduced desire to eat. By contrast, a healthy appetite is a level of eating that maintains a normal body weight. Losing your appetite may signify illness, but can also be triggered by psychological stress or appear as a side effect of medication.

Illness and Loss of Appetite

• Passing infections, such as colds or flu, can cause appetite loss. More serious illnesses can also cause this symptom, such as cancer, liver problems, thyroid problems or diseases of the heart and lungs.

Psychological Causes

• Depression causes people to lose interest in many things that usually interest them, including eating. Short-term stress can also cause a reduced desire to eat. Appetite loss may accompany major losses, such as death of a loved one or a lost job.

Other Causes

• Prescription medication can trigger loss of appetite. Examples are antibiotics, amphetamines, pain relievers and anti-arthritis medication.

When to Call the Doctor

• Call your doctor if you lose your appetite for more than two weeks or if there is sudden, unintentional weight loss. You should also seek medical attention if loss of appetite is accompanied by fatigue or pain anywhere in your body.

Considerations

• Loss of appetite is especially concerning when accompanied by noticeable weight loss. If there is severe malnutrition, nutrients may be given intravenously and a hospital stay may be necessary.