What are autoimmune diseases? Your immune system protects you from disease and infection by attacking germs that get into your body, such
What is atrial fibrillation (AFib)? Atrial fibrillation, also known as AFib or AF, is one of the most common types of arrhythmias.
What is atherosclerosis? Atherosclerosis is a condition in which plaque builds up inside your arteries. Plaque is a sticky substance made up
Ataxia-telangiectasia (A-T) is a rare, inherited disease. It affects the nervous system, immune system, and other body systems. Symptoms appear in young
People can lose all or part of an arm or leg for a number of reasons. Common ones include: If you are
What is aplastic anemia? Aplastic anemia is a rare but serious blood disorder. If you have it, your bone marrow doesn’t make
What is anal cancer? Your anus is the opening at the end of your large intestine. It is where stool (poop) leaves
Amyloidosis occurs when abnormal proteins called amyloids build up and form deposits. The deposits can collect in organs such as the kidney
What is an alcohol use disorder? An alcohol use disorder (AUD) is drinking that causes distress and harm. It is a medical
What are adrenal glands? Your adrenal glands are two small organs that sit on top of each kidney. The adrenal glands make
Your abdomen extends from below your chest to your groin. Some people call it the stomach, but your abdomen contains many other
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