Loss of Appetite
Free Symptom Checker
with Physician-supervised AI

Reviewed By:

Unnati Patel, MD, MSc

Unnati Patel, MD, MSc (Primary Care Physician)

Dr Patel graduated from the Zhejiang University School of Medicine. She worked in clinical research at the University of Illinois in Chicago and University of Nevada in Las Vegas focused on culturally adapted health interventions for preventive medicine in the community setting. Received her Master's of Science in Global Health (concentration in Health Policy) from Georgetown University, during which she worked with the WHO in Sierra Leone and Save the Children in Washington, D.C. Unnati went on to complete her family medicine residency in Chicago, Illinois at Norwegian American Hospital. | | She is currently working as a primary care physician in the city of Chicago and completing her Master's of Business Administration at the Northwestern University Kellogg School of Management and Fellowship in Leadership in Value-Based Care.

Yoshinori Abe, MD

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

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Content updated on Jan 4, 2023

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About the Symptom

Loss of appetite occurs when the desire to eat is lost.

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • Melena (black stools)

  • Vomiting of blood

  • Photophobia

  • Unexplained weight loss of 5% or more in 1 month

  • Recent weight loss

  • Edema

  • Jaundice

  • Fever

  • Gross hematuria

Possible causes

Generally, Loss of appetite can be related to:

  • Acute disseminated encephalomyelitis

    Acute disseminated encephalomyelitis involves widespread inflammation of the brain and spinal cord, resulting in damage to nerve fibers and their protective linings. It is a result of inflammation that occurs after after an infection or immunization. While it can affect anyone it is more common in children.

  • Pyloric stenosis

    Abnormal narrowing of the stomach exit. It affects babies between birth and 6 months of age and causes forceful, projectile vomiting that can lead to dehydration. Risk factors include male gender, preterm birth, and smoking during pregnancy.

  • Drug-induced nausea and vomiting

    Nausea and vomiting are common side effects of medications. They often occur shortly after starting the offending medication and may also be associated with headaches, abdominal pain, and diarrhea.

  • Hyperemesis gravidarum

Related serious diseases

Sometimes, Loss of appetite may be related to these serious diseases:

Doctor's Diagnostic Questions

Your doctor may ask these questions to check for this symptom:

  • Do you have a reduced appetite and eat less food?

  • Do you have a fever?

  • Are you feeling nauseous or have you been vomiting?

  • Do you have a stomach ache?

  • Do you have loose stools or diarrhea?

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Reviewed By:

Unnati Patel, MD, MSc

Unnati Patel, MD, MSc (Primary Care Physician)

Dr Patel graduated from the Zhejiang University School of Medicine. She worked in clinical research at the University of Illinois in Chicago and University of Nevada in Las Vegas focused on culturally adapted health interventions for preventive medicine in the community setting. Received her Master's of Science in Global Health (concentration in Health Policy) from Georgetown University, during which she worked with the WHO in Sierra Leone and Save the Children in Washington, D.C. Unnati went on to complete her family medicine residency in Chicago, Illinois at Norwegian American Hospital. | | She is currently working as a primary care physician in the city of Chicago and completing her Master's of Business Administration at the Northwestern University Kellogg School of Management and Fellowship in Leadership in Value-Based Care.

Yoshinori Abe, MD

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

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