A nutritional deficiency occurs when the body doesn't absorb the necessary amount of a nutrient. Read more about symptoms and treatment.
There are two main types of lung cancer: non-small cell and small-cell. Learn about how these lung cancers are caused, your treatment options, and more.
Learn about liver cancer symptoms, types, diagnosis, treatment, and prevention.
Stomach ulcers are painful sores in the lining of the stomach. They are a type of peptic ulcer disease. Stomach ulcers occur when the thick layer of mucus that protects…
Esophageal cancer can occur when a malignant tumor forms in the lining of the muscular tube that's responsible for moving food from the throat to the stomach. A growing…
Cirrhosis is the severe scarring and poor function of the liver caused by long-term exposure to toxins such as alcohol or viral infections.
Stomach cancer is difficult to detect and often not diagnosed until it's more advanced. Here's the knowledge you need to beat the disease.
Tuberculosis (TB) is a highly infectious disease that primarily affects the lungs. Largely thought of as a disease of the past, tuberculosis still kills over a million…
Hepatitis refers to an inflammatory condition of the liver. It's commonly caused by a viral infection, but there are other possible causes of hepatitis.
Peptic ulcers are painful sores in the lining of the stomach, esophagus, or small intestine. We'll show you how to treat and prevent them.
Crohn's is a chronic bowel disease that causes inflammation of your digestive tract. Learn more about treatment and prevention.
Colitis is inflammation of the colon. Read about the different types and associated symptoms.
Addison's disease occurs when the adrenal cortex is damaged, and the adrenal glands do not produce enough cortisol and aldosterone. Cortisol regulates the body's reaction…
Achalasia occurs when your lower esophageal sphincter doesn't work properly. Learn more about the causes and treatments.
Hookworms are parasites that affect the small intestine and lungs. Learn more about symptoms and treatment options for this infection.
HIV is a virus that damages the immune system. HIV is a lifelong condition, and without treatment, a person with HIV can develop AIDS, which makes the immune system too…
The thyroid gland produces a hormone that controls how your cells use energy. Hyperthyroidism occurs when the body produces excessive amounts.
Lactose intolerance is the inability to break down lactose, a natural sugar. Learn about signs and treatment.
Amebiasis is a parasitic infection, common in the tropics and caused by contaminated water. Symptoms can be severe and usually start 1-4 weeks after exposure.
Endometrial cancer is a type of uterine cancer. Learn the facts about this condition, including symptoms, stages, how it's diagnosed, risk factors, treatments, and more.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.