Fitness basics
Learning Center
Cardiomyopathy
This disease of the heart muscle makes it harder for the heart to pump blood to the rest of the body. Learn the different types and how they're treated.
Carbon monoxide poisoning
This gas has no color, odor or taste. It can be deadly. Learn how to prevent it.
Cancer
Find out the basics about cancer, including symptoms, causes and treatments. Learn steps you can take to prevent cancer.
COPD
This chronic inflammatory lung disease causes obstructed airflow from the lungs, resulting in breathing difficulty, cough, mucus production and wheezing.
Brugada syndrome
Learn about the symptoms, causes and treatments for this heart rhythm condition that is sometimes inherited.
Bronchiolitis
Infection in the small airways of the lungs is common in young kids and babies. Symptoms may include coughing, wheezing and trouble breathing.
Broken collarbone
This common injury is usually the result of falling, playing sports or being in a traffic accident.
Breast cysts
A firm, round lump in breast tissue could be a fluid-filled cyst. Typically not cancerous, breast cysts often need no treatment.
Breast cancer
Learn about this common cancer, including information on prevention, symptoms, diagnosis and treatment.
Brain tumor
Find out more about the different types, signs, symptoms and causes of brain tumors, which are growths of cells in the brain.
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