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What causes loss of appetite? 161 possible conditions

See a list of possible causes in order from the most common to the least.


Loss of Appetite

A decreased appetite occurs when you have a reduced desire to eat. It may also be known as a poor appetite or loss of appetite. A wide variety of conditions can cause your appetite to decrease, ranging from menta...

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Anorexia Nervosa

Anorexia is an eating disorder in which obsessive worry about body weight and the food you eat can result in severe weight loss. Symptoms include constipation, missed period, and thinning hair.

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What is anxiety? Anxiety often manifests itself as an apprehension about daily life. Learn the basics with this overview of the types of anxiety disorders.

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Depression Overview

Depression is a mood disorder that can cause extreme and persistent feelings of sadness, hopelessness, and worthlessness. Depression type largely determines what kind of medical treatment is best.

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Giardiasis is a parasitic infection of the small intestine. It may cause fatigue, stomach pain, bloating, and excessive gas.

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Heartburn typically occurs when contents from the stomach back up into the esophagus. This causes a burning sensation in the chest and a bitter taste in the throat or mouth. Heartburn may be prevented by avoiding food...

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The thyroid gland produces a hormone that controls how your cells use energy (metabolize). Hypothyroidism occurs when the body doesn't produce enough. Untreated, it can cause complications like obesity and heart disease.

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Bleeding or spotting, increased need to urinate, tender breasts, fatigue, nausea, and missed period are signs of pregnancy.

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Hepatitis is swelling and inflammation of the liver. It's usually caused by a viral infection. There are several types of hepatitis, including: A, B, C, D, and E. Symptoms may not occur until liver damage occurs.

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PMS (Premenstrual Syndrome)

PMS symptoms start five to 11 days before menstruation and typically go away once menstruation begins. The cause of PMS is unknown.

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Alcoholism is also known as alcohol dependence. It occurs when you drink so much over time that your body becomes dependent on or addicted to alcohol. When this happens, alcohol use becomes the most important thing i...

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Heat Emergencies

This condition is considered a medical emergency. Urgent care may be required.

Heat emergencies are health crises caused by exposure to hot weather and sun. Heat emergencies have three stages: heat cramps, heat exhaustion, and heatstroke. All three stages are serious.

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Cold and Flu Overview

Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared symptoms include headache, cough, sore throat, and more.

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Gastritis is acute or chronic inflammation of the protective lining of the stomach. It's often caused by the bacterium H. pylori, but can also be the result of excessive NSAID, alcohol, or cocaine consumption.

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Acute Pancreatitis

Acute pancreatitis is an inflammation in the pancreas, which causes pain and swelling in the upper left side of the abdomen, nausea, and burping.

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Types of Acid Reflux

Acid reflux symptoms are caused when stomach contents flow up from the stomach back into the esophagus, causing symptoms like heartburn, stomach pain, and burping.

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Alcoholic Liver Disease

Damage to the liver from excessive drinking can lead to ALD. Years of alcohol abuse cause the liver to become inflamed and swollen. This damage can also cause scarring known as cirrhosis. Cirrhosis is the final stage o...

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Low Blood Sodium (Hyponatremia)

Low blood sodium, or hyponatremia, occurs when water and sodium are out of balance in your body. A quick drop in sodium levels can cause weakness, headache, nausea, and muscle cramps.

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Hypercalcemia is a condition in which you have too much calcium in your blood. Serious cases could cause symptoms like abdominal pain, nausea, constipation, and weakness.

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Viral Gastroenteritis

Viral gastroenteritis, also known as the stomach flu, is caused by a number of different viruses. Its symptoms usually last for two to three days.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.