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Appetite - decreased

Loss of appetite; Decreased appetite; Anorexia

A decreased appetite is when your desire to eat is reduced. The medical term for a loss of appetite is anorexia.

Considerations

Any illness can reduce appetite. If the illness is treatable, the appetite should return when the condition is cured.

Loss of appetite can cause weight loss.

Causes

A decreased appetite is often seen in older adults. Often, no physical cause is found. Emotions such as sadness, depression, or grief can lead to a loss of appetite.

Cancer can also cause decreased appetite. You may lose weight without trying. Cancers that may cause you to lose your appetite include:

Other causes of decreased appetite include:

Home Care

People with cancer or a chronic illness that causes weight loss need to increase their protein and calorie intake by eating high-calorie, nutritious snacks or several small meals during the day. Liquid protein drinks may be helpful.

Family members should try to supply favorite foods to help stimulate the person's appetite.

Keep a record of what you eat and drink for 24 or more hours. This is called a diet history.

When to Contact a Medical Professional

Contact your health care provider if you lose more than 10 pounds or 4.5 kilograms (kg) without trying.

Seek medical help if decreased appetite occurs along with other signs of depression, prescription medicine, illegal drug or alcohol use, or an eating disorder.

For loss of appetite caused by medicines, ask your provider about changing the dosage or medicine. Do not stop taking any medicine without first talking to your provider.

What to Expect at Your Office Visit

Your provider will perform a physical exam and will check your height and weight.

You'll be asked about diet and medical history. Questions may include:

  • Is the decreased appetite severe or mild?
  • Have you lost any weight? How much?
  • Is the decreased appetite a new symptom?
  • If so, did it start after an upsetting event, such as the death of a family member or friend?
  • What other symptoms are present?

Tests that may be done include imaging tests, such as x-ray or ultrasound. Blood and urine tests may also be ordered.

In cases of severe malnutrition, nutrients are given through a vein (intravenously). This may require a hospital stay.

Open References

References

Mason JB. Nutritional principles and assessment of the gastroenterology patient. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger & Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 5.

McGee S. Protein-energy malnutrition and weight loss. In: McGee S, ed. Evidence-Based Physical Diagnosis. 5th ed. Philadelphia, PA: Elsevier; 2022:chap 12.

McQuaid KR. Approach to the patient with gastrointestinal disease. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 118.

 

Review Date: 7/23/2024

Reviewed By: Linda J. Vorvick, MD, Clinical Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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